Last night, I went to watch my roommate play some video game on his PC, sat beside him, told him I ate fish for diner, farted loudly, then left.
I was on the other side of the apartment when I suddenly heard: "You stinking pile of ****!". I guess it took a while for the fumes to get to his nostrils.
No, but really, I wouldn't do something like that. I'm decent.