Originally Posted by Roemilca

A blonde sits down next to an elderly man at a food court.
The blonde starts looking at the man, trying to find a way to start a conversation. Finally, the blonde turns to him and says, "TGIF!"
The man glances at her, and says, "Shit."
The blonde is confused, so she repeats "TGIF."
The man just replies, "SHIT."
The blonde gives up, and decides to explain. "No, 'TGIF' means 'thank god it's friday'."
The man turns to her and says, "No 'SHIT'. 'sorry honey it's thursday'."