Rhetorical acronym for "To Fucking Party Bro!"
Used when one refuses to explain the obvious reason for going out on the weekend or traveling to a place of enjoyment and hedonistic pleasures.
Marco: What you up to this weekend bro?
Chris: Driving down to Miami to chill with Ernie.
Marco: Why?
Chris: TFPB! Duh!!!
It's time people loosened their ties with religion and put a halt to unnecessary pregnancies---all the problems with the world are caused by TMFP using up all our resources!