The act of sexually assaulting a girl in her sleep.
Person 1 - Hey, I got with this girl in a tent the other night, we did some stuff.
Person 2 - Really?
Person 1 - Yeah.
Person 2 - I heard she was half asleep, and you were essentially sexually assaulting her.
Person 1 - She is lying.
Person 2 - Your such a waterfail, you know that don't you.
Unable to take a joke, gets angry over the joke and has no come back, in extreme cases gets facebook groups removed which have no link to the person what so ever.
Person A: Stop calling me Ginger
Person B makes a face book group
Person A: Yeh, That's really not funny
Person B: It is
Person A has the facebook group removed
Person B: I see the group was removed
Person A: Oh, erm, really?
Persom B: Waterfail