When someone with a group of friends(typically online) says, "hey I'll be right back." But doesn't return. Later returning as if never leaving at all.
The term is used because the role played in said game(s) is crucial.
"Yo he just foshed us hard."
You totally foshed me last night dude Dude we need Mikie to get anything done tonight, I hope he doesn't pull a fosh and go to 7/11
An offensive move in foosball. When a defender is trying to clear the ball, your offensive 3-man rod deflects the ball back into the victim's own net. A.K.A. "Jedi-ed" because of the psychic skill it takes.
Foosing your opponent earns you the right to call your opponent a girl's name (e.g. buttercup, doris, pocahontas)