A more vulgar and rather extreme form of the common term "tough luck". The two are interchangable, as one may be used wherever the other can.
Boy: Oh no! I just got my report card in the mail and I have recieved all F's!
Dad: Firm titties, son. Firm titties.
Dad: Firm titties, son. Firm titties.
by bl@de_catcher March 28, 2009
Get the Firm Titties mug.