Most embarrassing place you've gotten a boner?

I’ve had a few, but probably the most embarrassing was a few years ago while on a business trip with two of my supposedly straight colleagues. We were all staying at the same hotel (separate rooms) and decided after we got back from the work dinner with the client to all hit the hotel gym together for an evening workout. We had the place to ourselves and it turned out that there was a sauna in the men’s locker room. After our workout we decided to use the sauna and sit and talk about the next days presentation. Because it was late in the evening, the batch of fresh towels had not arrived and there were only a few clean towels to be found and we needed them for our post workout shower, so we decided to just go into the sauna naked and each sit on a clean washcloth again, saving the full sized towels to dry off after our shower. Well sitting there in the heat, post workout blood flow at maximum, I watched as all three of our cocks started to plump up a bit. The only thing was, my two colleagues stayed at a healthy semi, hanging down between their legs as we sat and talked, but mine continued to rise. Within a minute or two I was at full erection pointing straight up. At first they didn’t say anything about it, but it was hard to ignore and Matt made a comment. I just said that I’d not cum in a few days and that the heat must be making it hard. Thankfully no other guests entered. It finally subsided to a semi and we finished and showered and went to our separate rooms. Well about ten minutes later, there was a knock on my door and it was Matt saying he wanted to go over something for the next days meeting. He mentioned that he also had not cum in a few days. Needless to say, we jerked off and sucked each other on the hotel bed.
 
My best friend from my 20's would spend the night at my house several times a week. I was never embarrassed about sleeping naked around him even though his dick was bigger than mine and it was not unusual for one or both of us getting boners. He was totally straight with a girl friend and all but we were best friends and he didn't care if I was gay. (now days he won't even talk to me).

One night we were asleep and I woke up with him shoving me away from him. Apparently I had popped a boner and covered his ass with a ton of precum. He said he woke up feeling wet and reached down and my dick was rubbing his ass. He laughed about and took his briefs off so he would not sleep in them wet. The next morning I woke up first and noticed his dick was hard and beet red and there was a long stream of precum hanging from his dick. But there was more than just precum. It looked like he had shot a load during his sleep and his dick stayed hard afterwards. I guess he enjoyed what had happened last night. I pretended to go back to sleep so he would be able to clean himself up while I slept. A few minutes later I heard him stir and reach down for a cum rag I kept under the bed. Then he went and took a shower.
 
At the Barber Shop. After many months of not cutting my hair, I decided to get it all buzzed off for the summer (to a #1). There was just something really sensual about the way it felt as I watched myself get sheared like a sheep, I was wearing gym shorts so nothing really holding me back and the cape was noticeably tented. I'm sure the barber noticed, but he didn't say a word. The more I thought about it, wishing it would go away before he took the cape off, the worse it got. I did my best to adjust as I stood up so my boner wasn't pointing the way as I walked out of the shop.

I just saw this post. I used to go to this old time barber shop when I was in high school. My barber was a handsome older guy a few years older than my dad, and when I was 18 I was totally into older (50 something) guys with salt and pepper gray hair. My barber looked sorta like George W. Bush did before GW went totally gray. Anyway that guy would always shave my neck with a straight razor and I literally got a boner every time he massaged my neck with that hot towel and rubbed that warm shaving creme on my neck. Well one time my mom dropped me off there for a haircut I was wearing those Umbro soccer shorts that everyone wore back in the 90s and you literally cannot hide a boner in those things. Anyway the barber pulled the cape off and I got of the chair and there was literally no way I could hide the tent in my shorts. So I just acted like nothing was amiss in my pants and paid him and walked out of the shop. I am sure that he and everyone else in there including my mom who was waiting for me noticed my boner.
 
Not sure which was the most embarrassing I have had three of them that were humiliating.

The first happened while square dancing in gym class with my partner who was the hottest girl in my high school. A bunch of other guys who were sitting in the bleachers waiting their turn to square dance noticed the tent in my gymshorts. This was the 80s and gymshorts were really short and tight and my dick was the same size then as it is now. lol They started laughing their asses off and one of them started saying saying "Trevor has a boner! Trevor has a boner! Trevor has a boner! I never lived that one down I was still getting shit about it when I was in my mid 20s.

Then when I was 18 and went for a physical for college and the doctor made me drop my shorts to check my junk and before he even touched it was rock hard and dripping. When I pulled my briefs off the doctor said "Whoa!" What was even worse was while he was checking my nuts his matronly nurse barged into the exam and said "Mrs so and so's daughter is on the phone and says her mama has run out of blood pressure pills." Apparently this old woman liked to check out teen boys because one of my friends said she did the exact same thing when he was in there for a sports physical.

The last one was when I was 19 and had to go to a urologist for some tests and he gave me a prostate exam. As soon as he shoved his lubed fingers up my ass I was rock hard and dripping, and when he pressed on it I thought I was going to bust a nut on his exam table. It was a totally humiliating experience but it taught me a lot. It made me realize why gay guys like it up the ass (which up to that point I never understood) and that I would really enjoy being penetrated by another man and wanted to try it.
 
In communal high school PE and sports showers. Eventually I would learn to look at the walls, close my eyes, count backward from 100, etc.

At the urologist when I had a problem with my prostate. She slid her finger into my ass and moved it around far more than for just the usual exam, while her very cute assistant held a gauze pad against my cock to catch any cum. The assistant got a surprised smirky look on her face as I immediately became fully erect and cum started oozing out.

Any time I get a massage from a pretty massage therapist. One I used to go to noticed I was squirming a bit on my back under the towel. I had gotten erect and my urethra was uncomfortably pressing against the towel, which I told her when she asked what I was doing. Shockingly she just pulled open the towel and finished the massage with my cock standing up straight at full attention. No way was it going down then, knowing that she was seeing it. Later she said, “You might want to have your wife take care of that when you get home!”
 
Another time on Spring Break I was standing in only swim trunks on a balcony and my straight buddy was putting sunscreen on my back and shoulders before we went down to the beach. I had a major crush on him (he knew it, was cool with it—even used to tease me about it). Well, having him rub me made me pop a tent. I was embarrassed and tried to hide it, but to no avail. When he saw it, he grabbed it and squeezed it and yelled “wacka wacka wacka!” That did not help, of course. Instead, it made me a lot harder lol.
 
So. I have nightshift right now. There is nothing to do for me now. Everyone of my patients is sleeping. So i thought i look on LPSG & stumbled across this thread.
so i have a embarrassing boner in this very minute. My colleague sits right next to me.
thank you guys haha
 
I'm rather new here and just posted this in the thread about hostels. Being new to the site, I'm not sure if cross-posting is frowned upon so please let me know if it is. It just seemed relevant here as well...

Decades ago, after my first year of college, I was backpacking around Europe. One of many memorable experiences was duringt a week at a hostel in Barcelona. My first night there I thought I'd shower so I grabbed my stuff and headed to the bathroom. There were benches in the center of the shower room with curtained individual stalls around the perimeter. I stripped down, left my clothes and towel on a bench, hopped in and had a refreshing shower. When I turned the water off I heard conversation -- with female voices which seemed odd.

I peeked past my curtain and saw two naked women ready for their showers. At first I thought I had just gone to the wrong bathroom, then saw another guy come in. I discovered it was a coed bathroom. I didn't even know such a thing existed!

Being 19 in such an unexpected situation, the realization that I was in mixed company got me rock hard. I was so obviously excited but a bit panicked. My clothes and towel were 15 feet away on a bench in the middle of the room, but I was as erect as I'd ever been. I turned the water back on cold, jerked off and waited for my penis to calm down. I then took a deep breath, got out pretending I'd done this before and toweled off with everyone else (there were both men and women naked in the room then).

In the end it was great for me to have this unplanned experience being nude in mixed anonymous company. Years, when studying at a European university, I wasn't phased to find the bathrooms on the classroom hall were coed. My femal classmates would walk past as we guys were at the urinals. At another point in my life, I lived somewhere with coed natural hot springs. I was totally comfortable and fully enjoyed the mixed company with no anxiety (though I still had the occasional physical reaction which I would keep discrete.) I was raised in a modest, but not repressive family so this was not the norm I knew, but quickly I realized how natural it was.
 
Sitting on the back seat of my uncle's motorcycle. The whole vehicle was vibrating, also feeling my crotch rubbing against his butt. I was a virgin back then, so that explains it.
I think he noticed it but played it cool. The most awkward part was when he dropped me off and i had to walk with a hard on.
 
I was in the shower at the gym. My dick got hard and would not go down. It was hard when I got out of the shower and as I got dressed. There was one guy who pretended to not know where his locker was as he tried lockers all around me.
 
During a presentation at work for no apparent reason. I’m naturally a ”grow-er”, not a “show-er”, thus I can usually wear tight jeans without getting to much attention to my crotch. However, that day, all the attention moved from the keynotes on the screen to my physiological awkward experience.
 
My first time showering in the locker room after PE my freshman year of high school. Only two of us were brave enough to use the open showers and I got a boner. I know that totally normal for a locker room, but try telling that to a bunch of high schoolers.
 
So true. Hired as a bellhop at 18 I worked in concierge at a hotel for the next four years and shagged over two hundred female guests from over two dozen nations. Most were married. Many were repeats. Had my first experiences bulling for couples and topped my first gay bottom while there.

The amount of sex which went on there was amazing.

When I was at university I worked as a batman/waiter , had to wear tight fitting black trousers and.black shirt ,caught an older female guest 34 yrs looking at my ass , when I came back to serve her drinks I had a semi , she noticed smiled licked her lips , I got slightly flustered aand soon had a full boner, just at her eye level. Lateras I was finishing my shift she ordered a drink for room service , I had to take it up to her , what an experience, was taught a few tricks over her next few visits .
 
On a flight back from Hong Kong a few years ago - I was freeballing in a pair of Under Armour shorts and the landing was unexpectedly bumpy, which caused a rather uncontrollable hard-on that wouldn't go away!

I had to cover myself with a blanket the entire time we were on the taxiway! :joy:
 
Normally I sleep nude but we were visiting my sisters family which had limited space so I slept on the couch and had on some very sheer shorts. I happened to wake up and the t.v. was on but muted and my sister in law was sitting in the chair next to the couch as I awoke. She gave me a pleasant "good morning" and shortly after I realized I was rock hard when I awoke. I just gently slid a pillow over me.