I've heard some funny things but I don't remember. However, I said something that made the entire lobby laugh on Halo 3, and my friends I was playing with said it was the funniest thing they've heard.
My friends and I always like to talk about how hot Avril Lavigne was, and one time as I was deatiling the things I would do to her, well...
"Dude, I was **** the **** out of her. I would eat the corn of her poop. That woman is so hot and I would just- Oh. Hi mom."
My mom gave me a very strange look.
Another time, I was talking to my friends, when all of a sudden we were transported to the lobby. About 25ish people heard me say "God, I hate ******* so much. Oops."
I'm not racist, I did it on purpose as a joke. Hilarity.