Funny S.H.I.T!
This reminds me of a joke.
A blonde gets on the elevator. She goes up to the other person on the elevator and says, "TGIF." He replies "SHIT." She says, "TGIF." He replies, "SHIT." She gets flustered and says, "TGIF - Thank God It's Friday." He says, "SHIT - Sorry, Honey, It's Thursday."
*ducks rotten tomatoes*