Twice...
Roommate in college and my ex.
Roommate, I think he refused to believe what happened. He was a college athlete and would go to training at 5:30 in the morning. I thought I could get good wack in before he came back. Apparently training was short this day. He came back like 15 minutes later. He didn't see my dikk in my hand or no shyt...just that after effect when you sitting there stupefied. I tried to play it off, but I don't think I even wiped off. I just crawled in bed.
Same thing with my ex, my ex wasn't fukking me often at the time, so I jerked off...said fukk it imma wack off. My computer was in the basement so I thought would hear noise well before I got caught...nope. Caught me again when I was done just sitting there stupefied.