look up any word, like oprah dollars:
 
1.
Burst Into Flames Laughing (the new lol)
Guy 1: What's black and at the top of the stairs?
Guy 2: Dunno?
Guy 1: Stphen Hawking in a house fire!
Guy 2: BIFL!!!
by biflcopter January 13, 2010
 
2.
Buy It For Life: something that's meant to last; not disposable
Him: I'm tired of replacing my cheap tools all the time.

Her: Get quality BIFL tools that won't break so easily.
by biffled February 22, 2013