39 Underground Sauna

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2.42 / 3
158
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  • ひろ
    13:43 June 7, 2026
    I've been going to Underwear Day on Thursdays for two weeks in a row.
    The good thing about this place is that it opens at 12:00 PM, and there are always about 20 customers right after opening. If you find someone you like at this time, it's easy to hook up (if not, it's a monster's paradise).
    I'm into young, slim to lean and muscular guys, and on my first Thursday, I met a small 25-year-old Thai guy and a 23-year-old Chinese tourist. Both were handsome, lean, and muscular, and they brought their own small bottles. One time wasn't enough, so I went back to the room with each of them twice and impregnated them (the second time was more about conversation and just playful insertion).
    I exchanged LINE IDs with the Thai guy, and we're planning to meet up again at a hotel soon.
    While there are days when I can meet multiple guys like this, there are also days when, even if I go at the same time on the same day, it's just old guys with loose bodies, and I leave without doing anything. If you stay late at night, a lot of Thai guys come in after work in the evening, so if you stick around, you might find someone you like, but I think it's the perfect place for a quick release during the day.
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  • 種壺
    22:27 June 1, 2026
    Unable to contain my excitement, I rushed in again the next day, just after 12 PM when it opened.

    But the person in front of me looked different.

    Oh no, maybe I'm too early...

    There were hardly any people.

    There were still a little over 30 people, but the day before there were at least 150, so it felt incredibly empty.

    Also, the previous Friday was a nude day, a group of men with erect penises exposed, but today it was underwear or just a full nude.

    And surprisingly, the percentage of men wearing underwear was high, and they were all wearing black underwear.

    Are black underwear the standard for Thais?

    If so, there seemed to be fewer daring guys.

    Furthermore, the dark area that had been so lively the day before...

    When the sun was high, sunlight streamed in through the gaps in the curtains, so it wasn't completely dark. This was tricky.

    Apparently, Thais become more lewd in complete darkness, but conversely, they become shy as soon as there's even a little light.

    And today there were a lot of bottoms.

    Unlike in Japan, there isn't the convenient custom of being able to select tops, bottoms, or versatiles by the location of the locker key, but in the dark, if you touch a dick and it's erect, you're basically a top.

    The day before, I grabbed over 50 dicks (not an exaggeration), but today the rejection rate when I tried to grab one was unusually high.

    That means the competition for tops is high, and even if it turns into a small orgy, it becomes a boring situation where everyone around you is a bottom.

    Everything is a learning experience.

    Even so, I managed to get two dicks in the dark. And one was shoved into my pussy in a private room.

    The one in the dark was quite intense, and with the effect of the small bottle, my pussy felt amazing.

    However, the old man who fucked me in the private room had a big dick, but he was wearing a condom, so my pussy got a little sore.

    I realized that this room is best visited after sunset, and I sheepishly retreated. That's quite an educational experience.
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  • 種壺
    22:23 June 1, 2026
    Continued

    This story takes place in October 2025.

    At 8 PM, an announcement was made about a mask party.

    I was interested in that too, so I decided to try and escape the darkness.

    However, before I could get out of the darkness, I was violated three times along the way through the maze.

    Thais are just too enthusiastic.

    Finally, I escaped, put on a mask that only covered my eyes, and went to the fourth floor.

    At this time, the private rooms are not closed.

    I was immediately dragged into a private room by a young, well-built top, and impregnated in front of everyone.

    Then, another top, inspired by that, used both my upper and lower mouths.

    It was truly a seed toilet.

    This was exactly what I wanted.

    I remained a seed receptacle for a while until the crowd thinned out, and once I calmed down, I returned to the darkness.

    The darkness is still incredible.

    I waited on all fours by the bed, and within minutes a cock entered my pussy.

    I was getting hungry, so I decided to head to the locker room, but I was raped three more times before I even reached the locker room, and it took me 30 minutes to finally get there.

    My pussy was definitely showing off.

    I wasn't sure how many guys had impregnated me, but when I got back to the hotel and came, it was a mess.

    Pre-cum was dripping profusely from my chastity belt.
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  • 種壺
    22:21 June 1, 2026
    It was October 2025.

    I bought a small bottle of beer from a street stall near Nana Station and headed to 39underground, the most notoriously lewd place.

    I'd heard rumors, but it was even more intense than I'd imagined.

    I paid 240 baht at the entrance and secured my assigned locker with a padlock.

    The lockers were on the first floor, right inside the entrance.

    Several guys were around me, their erect penises exposed, fiddling with their smartphones.

    I was fully protected, wearing a chastity belt to avoid interfering with my planned sex session later—that is, to prevent myself from ejaculating.

    The small chastity belt covering my small penis was quite conspicuous.

    I headed to the third floor to enter the infamous darkness.

    There were quite a lot of people there, and it was a nude day, so the view was amazing.

    And as soon as I reached the third floor, a man with a huge penis dragged me into a private room.

    Thais are aggressive; without any pretense, they immediately make you suck their dick, put oil on your pussy, and then shove their dick in.

    Of course, it's raw.

    The small bottle of cum, after a long time, really hits the spot.

    They quickly inseminate me and then throw me out, so I head straight to the darkness on the second floor.

    I'd heard about it, but the darkness was like a packed train; I couldn't move forward at all.

    Even so, I managed to get close to the bed area at the very back, but just before I got there, they put their fingers in my pussy, and I guess they realized I was a cum receptacle, because they immediately put their dick in.

    It was thinner than the previous one, but longer.

    So it hit the deepest, most sensitive spots.

    While still inside me, they forcibly moved me to the bed area at the back, and when I got on all fours, they started thrusting violently.

    It was dark, so I couldn't see their faces. But for me, a cum receptacle, that didn't matter.

    Another dick was offered to me, and naturally, I took it in my mouth. It was quite a large cock, and I devoured it, finding it truly delicious.

    Just as his thrusts from behind quickened, a warmth spread through the depths of my pussy.

    And just as I thought one cock had slipped out, another one immediately closed the gap.

    Going crazy with this little bottle, I clenched my pussy tightly, trying to please the top.

    I took the cock deep into my throat, savoring the delicious cock.

    It was pure heaven.

    After five guys had shoved into my pussy,

    I stopped counting.

    An hour and a half had passed since I entered this dark maze.

    I have no idea how many cocks have penetrated me.

    Tsukku
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  • なおと
    16:00 May 21, 2026
    Lately I've been going to all the trendy Onsen-style cruising spots, so I was really excited by this seedy atmosphere. It's definitely very erotic.

    I don't do anal, so I only observed the pitch-black space at the back of that maze (though you can't see anything there). I mostly wandered around the slimmer-person-only area on the floor below the rooftop.

    To get into that space, you have to squeeze through iron pipes spaced about 30cm apart. It's like a terrace, and you can vaguely make out people's faces and bodies by the outside light. Cruising naked while listening to the sound of pouring rain is pretty erotic.

    After I finished, I glanced around and saw a man with a potbelly. "How did you get in here!?"
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  • JADE
    12:43 February 20, 2026
    Before I knew it, I was in my 50s. About 12 years ago, I loved Sauna Mania, but now this place is my favorite. (Although my first time here two years ago wasn't that great.)

    ★ Close to the station and easy to get to
    ★★ Affordable and lots of Thai people
    ★★★ There are Thai-style restaurants and supermarkets nearby that are easy to frequent. (After you're over 50? It's a hassle because you've never been there or it's far away.)
    Recently? It seems like the lockers on the first floor have been upgraded to three levels: upper, middle, and lower. I prefer the middle level on the first floor, and I go on weekdays, so I'd like one. (It seems like it would be crowded on weekends, so it's hard to ask.)

    I went twice this time. It cost 200 baht and 240 baht on Thursday afternoon and Friday afternoon. In Japan, I'd long ago become a "plain old man," but there's still demand in Asia, so I was able to go on Thursday and Friday. I was able to go out on Thursday, but after we finished, she looked for another one, so I couldn't go out on Friday. (Private rooms in Thailand are small, aren't they? Aren't they hard to dig into?) She was a good match for me, an "old-fashioned guy" who likes to chat about all sorts of things after work, so I started talking to her and found out she lived alone in a nearby condominium, and that's how our "little romance" began. Saturday was Valentine's Day, so I started staying at the condominium instead of a hotel that night, and she took me to the nearby supermarket, restaurants, breakfast spots, etc.

    On my way from the station, I pass a Thai rice restaurant on the right side of the alleyway entrance leading to the noodle shop and sauna. The food is delicious and I recommend it. The prices are listed (50-60 baht).

    Every time I go to Bangkok, I always visit Erawan Shrine, so I'm personally grateful for this connection.


    Maybe it's because I'm in my 50s? Since last year, I've noticed my stomach has gotten really weak. This time, too, I ate a lot of local food, and towards the end I found myself checking the number of Wakamoto bottles I had brought with me, and also took a dose of the anti-diarrheal medicine that my doctor had given me previously.

    Lubricant is available for free at the drink counter on the second floor, and I use it too, but it does make my penis feel a bit strange the next day, so if you're worried, it might be best to bring your own.

    I also really like the fact that you can always get a new mini towel at the reception on the first floor.
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  • たなか
    13:38 January 24, 2026
    Everyone's reports have really inspired me.
    Maybe Sunday would be good? I'll go in the afternoon or evening of February 1st and write a review!
    By the way, I'm also interested in Hawaii cinema near Wong Wei Yai station.
    I'd love to become their sex toy. I'll report on that as well, but if anyone knows the exact opening hours or exaggerated times, please let me know.
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  • サルゴリラ好き
    02:01 January 12, 2026
    1/10.11 came and went somehow. Still not many young locals around, way too many in their 40s, 50s, and 60s. The guys from OSSAN'S LOVE might be the best. I'm into younger guys, so I didn't have the best time, but I did hook up a few times. Thai guys' dicks vary way too much in size, from huge to tiny. (lol) Where the hell are all the young monkeys and gorillas? If anyone knows, please tell me!
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  • ゴリラ好き
    20:15 January 9, 2026
    Went on 1/7.8. 200 baht. Last year it was packed with locals and I was thrilled, but this time there were Chinese and white people too—it wasn't a zoo anymore. Still managed to hook up with locals both days. Maybe it wasn't as lively as weekends since it was a weekday. I'll try my luck on the weekend and head back. Hope there are young gorillas. By the way, that cute young monkey-like gorilla girl from Laos who was there last year was still around. She was at the front desk. Adorable. (lol)
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  • それしきの人生④
    00:22 January 5, 2026
    Oh my! Now the gangly guy dug in. Normal position and back. In the upper mouth, the bearded gangly guy pushes his cock in, just as if to say, "Don't forget about me, too. I've got it now! Don't fight for me! Don't fight for me! Anh-anh. A gasp that leaks out on its own. Thailand's super tight, raw cock feels so good. Come on...! I wished that I could come, but I guess he's also a uke, so I couldn't cum. Oh, I was depressed earlier because I couldn't fulfill my dream of seeding him, but I guess things can make sense in this way. I think about the depths of life. Then, in the triangle, the bearded guy ejaculated into my mouth, thanked me, asked me to kiss him, and said goodbye. By the way, they were talking something in Thai during the play.
    As I lay on my back on a chaise lounge on the rooftop with my chest full of cum, I saw a narrow staircase leading up to a small room. This staircase was the maximum danger level. The width was narrow, the planks were thin, some steps were slightly sloped, and some steps were slippery with lotion, so you had to be on your guard. The small room on the roof was large enough to accommodate six people for a long time, and the men were playing with each other while a fan was spinning. Looking out through a gap in the fence, I saw skyscrapers and the urban interior of the room, and the difference between this place and the other place was amazing.
    On my way to the shower, feeling full of energy, I found a gaggle of people in a brightly lit room. I didn't want to regret it, so I decided to just say thank you and that I was leaving for the last time. I went up to him, but he didn't seem to realize that I had just met him. I said something in his ear like "I'm going back to the hotel. He said something, but I didn't have time to listen back and just smiled and waved. That was the rest of my life. I guess just having a dream in the dark, or having agonizing thoughts, is better than nothing.

    Supplement 1.
    We stopped by the Pahong Theater, which is almost next door. Paying 200 baht at the counter, they give you a ticket, and after you enter and have your ticket stripped, you go inside. A lot of guys were hanging around in the space, which used to be a very nice movie theater. It was very atmospheric.

    Supplement 2.
    The food at a street stall called "Heng Heng Khao Mangai," located around the corner from the underground sauna on the main street, was very tasty. I especially enjoyed the peppery soup that came with it. It was so delicious that I wanted to ask for an hour how they make the broth.
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