look up any word, like b4nny:

1 definition by SouthBendGuy

Penn Football - which is a bad word
Abbie: "Woohoo let's show some school spirit and make a T-shirt with PFB"

Superintendent: "BANNED, because urbandictionary.com has PFB to mean 'potential fuck buddy' as one of the definitions way down there!"

(True story)
by SouthBendGuy August 26, 2011