Not public, but still bad...
Years ago, as an 18 year old, I was with my boyfriend and his mates, and we went back to one of his friend's houses, a large farmhouse in the middle of nowhere.
Lads were messing around, so I went first and opened the door, which led straight into the kitchen.
Now, from my point of view, what happened was a totally strange man appeared, naked, with a large erection, and started ferreting in the fridge. I screamed in shock.
What happened from his point of view was that he was having a fun evening in with his girlfriend, and some totally unknown woman had walked into his kitchen, seen him naked and screamed at him.
Funnily enough, he screamed, slammed the fridge door (narrowly missing catching his tackle in it) and legged it.
Turns out boyfriends mate hadn't mentioned to us his elder brother was home, nor mentioned to his elder brother he was bringing a load of friends back from the pub.
Little eye contact was made for the rest of the evening....