I work in a high rise, professional office building down town. Every now and then when I need a break, I go sit in the bathroom on the floor where the cafeteria is, and play on my phone in the stall.

Recently I was alone in there and a guy came in and went into the stall next to mine. It was clear he wasn't using the bathroom, so I just assumed he was playing on his phone and killing some time as well. However, after a while, I began to notice the unmistakable sound of him stroking off and I could see the shadow of his hand moving on his erect cock. This went on for 10 mins and I didn't know what to do. I was excited by the taboo of it, but was also shocked. After he finished, he pulled up his pants, walked out of his stall, glanced into mine, then left. He did it again a few days later when I happened to be in there.

Anyone else, men or women, have a similar experience?

I jerk off at work all the time. Dont know if anyone has seen or figured out what i was doing. I think of it sort of as a rite of passage for the job. Once i jerk off and cum there, its my place. Every job ive had since college i jerk off and cum at work.

I've had that happen about three times over the last few months and I think it's the same person. Last time was on Friday last week. I was on the net on my phone in the stall when I heard the unmistakable sounds of someone wanking. There's a 6" gap at the base of each stall and tilting my head, I could see the shadow of someone stood facing the pan stroking their cock. I could tell when they were getting close as they were not being as quiet as they thought they were! Right before he came, he was slightly edging, stopping briefly, then starting fast again. Pretty hot and started to get me hard.
I timed getting out of the stall as he was coming out - it was one of our senior engineers from another wing, a guy in his late 20's.

Not happened to me at work but a few times at school I could tell guys in stalls next to me were jerking off. Though I think as teenagers we all knew fellow students were at it pretty regularly. Have to confess I did it a few times myself.

While it isn't common to "catch" someone jacking, I don't think it's unusual for people to masturbate ay work. I jerk off at work when the mood strikes. It's a good stress reliever. But if someone walks in, I either stop, or slow down.

I have stroked at work , and in stalls. prefer away from work

Not at work but at a traditional Korean jjimjilbang spa in the US. You can basically stay 24 hours at a time if you want and they have heated sleeping areas with pads. So I was resting next to this young Korean straight couple who were spooning pretty much the whole time. He was fidgeting a lot, trying to wiggle his waist against hers.

Closer to morning I got up and went back down to the main floor to use the bathroom. In the large stall next to me there was no doubt from the shadow and the sounds that the guy was furiously masturbating and it was fairly obvious when he had finished.

He spent some time wiping up the spooge and as I was drying my hands he stepped out of the stall--it was the same guy who was spooning his girlfriend all night. Solved the blue balls himself.

Since they maintain hygiene in the spa pools by requiring nudity I got see what he was packing and it was still a bit on the chubby side from all the vigorous exercise :-)

Hot stories, I was once on holiday at a campsite in France and the guy in the shower next to me was clearly having fun, the slapping and the soft moans were a dead giveaway. I had to have one too - once he left.

oh, yeah. First happened to me as a kid, was in a stall in a campground, young guy came into stall next to me. I watched the shadows as he pulled out a hard cock, jacked off really fast, slowed as he was about to cum, shot into a wad of tissue and then left quickly. Yeah, I sat there pumping away after what I just experienced. He had to know I was there.
Then at college, used to hang out in the library basement mens room and jack off. Once in a while, would have a guy next to met silently doing the same, with grunts and then a hasty exit. Only the dried evidence of the wall remained. In the 70s, there was a stigma to having any involvement with another guy, but we all probably wanted it.
And sure, workplace stalls have always been a great place to cum, especially after getting all hard looking at some of the young scenery around. No point in letting that go to waste !

Once on a business trip I was taking the red eye from Anchorage to Seattle. The flight was leaving just after midnight and I stopped in the mens room next to my gate. It was one of those huge ones with two entrances and 20+ stalls. I went into one of the stalls and while standing there heard the unmistakable sounds of a guy jacking off. I could plainly hear him slapping his wet cock plus he was softly moaning. Because of the way the stalls were arranged, I didn't walk by the one he was in and I don't think he realized I was there (the rest of the place was empty). I finished, walked out and set at the gate where I could see him when he came out. Nice looking guy and he ended up sitting across the aisle from me on the plane. I don't think he had any clue anyone overheard him.

I heard someone once in the bus station toilets.
Unfortunately he'd finished by the time I'd plucked up the courage to try and look ok through a cracking in the doorframe. Shame.

I never used to masturbate at work - sort of felt guilty about it.

But one time I noticed a woman with her knickers showing - and it was only the top of them above her waistband. But it was enough and I simply had to relieve myself, which duly happened in one of the toilets.

On another occasion a girl came to work in a completely see-thru dress, you could see everything, her knickers and bra, crotch gap - the lot. I got as close to her as possible to get a good look but trying not to appear like a total perv.

I was pushing into my undies and the inevitable started to happen as I spontaneously had an orgasm. Then off to the nearest toilet to clean up the mess.

Yep and I have even watched a dude jack off on a bus to Denver..got me hot as heck...

I have a couple of funny experiences.

One I was Jerking off in a toilet stall which was at a large london music venue, everybody else was watching the concert so i got completely naked jerking off standing bare foot in the puddle of piss, I was just getting close to cumming when the concert finished and within seconds the toilet was full and there was a queue.

I ended up having a kind of ruined orgasm, dripping cum down my leg, jeans and on the floor.

The other was when I was about 15 and a friend and I when going for a piss in a public loo and we could here a guy jacking off in the stall. As we where about to walk out my friend pretended to call the police and tell them a pervert was masturbating in the toilet! then we waited outside as he came dashing out a few mins later lol

When I was at college one day I went for a piss and could hear the unmistakable sound of wanking from one of the cubicles. To this day I still kick myself for not knocking on the door and asking how it was going and if I could join in.