Have you ever been caught jacking with another guy? What was the situation? What happened as a result?

Don't know if this counts but here goes...
My first JO buddy and me got caught on purpose by a mutual friend because we wanted him to jerk with us.
The 3 of us often had sleepovers and such (I was 13-14 or so). So, one night when having a sleepover, my buddy and I simply got naked, hard and stroking while the 3rd guy used the restroom.
His surprised facial expression when he returned to find his 2 friends going at it full-speed was priceless. He was a bit a shy at first but soon became a regular participant.
Never got caught by accident though.

My wife caught me jacking to porn with my best friend.
She said "Looks like you boys are having fun!"
She didn't join us that time, she had to cook dinner.
But she has joined since for several Jack and Jill parties.

Wife and I were on vacation.
She keeps me in a chastity cage so I can't JO whenever I want.
She announced that I would be allowed to JO at 2 PM one day.
She would release me at 1:55 and lock me up at 2:05.
She is very strict and I know that so I take what I am given.
We go to the room at 1:50, the maids are doing their thing in the room,
Wife says, use the balcony (its big and we are high up - next to top floor).
I am unlocked in the hallway, cover myself and run through the room to the balcony.
I immediately start to JO and pound it hard and fast.
About 30 seconds into it the wife and maids walk onto the balcony to watch.
I am so hot after 2 months in chastity that I don't care and I keep jacking.
Just as I am about to cum, I hear laughter from above me, the balcony above has about 2 dozen people watching and laughing.
I don't care, I shoot my cum into the condom, when I am done, my wife has the maids put me back in chastity and then makes me stand and show the whole group how I eat my cum from the condom.
then when I am locked up again, my wife takes me upstairs to the party and I have to go nude so they can all inspect my tiny penis in my tiny pink chastity cage

Yes was caught in my teens with my firs cousin dressing with him by my mum. She just told us to enjoy it and re closed the door.

My teenage buddy (we were both 17) and i almost got caught stroking each other in a campground shower but once we heard the door open turned our backs so the guy coming in could not see our hard ons.

Back in my youth it was close a number of times - but thankfully - at least as far as I know - we were never caught.