A Blonde is getting on an elevator

A Blonde is getting on an elevator and meets a gentleman on board.

“T.G.I.F.” she says.

“S.H.I.T” was his reply.

Puzzled she replied “T.G.I.F”

The gentleman was getting a little disturbed the the remark, so he says again. “S.H.I.T.”.

The Blonde leans over and whispers “THANK GOD IT’S FRIDAY”.

The gentleman responses with “SORRY, HONEY IT’S THURSDAY”.