look up any word, like bye felicia:
 
1.
Short for 'facebook wall post'. Typically said if you are inebriated. Short for 'facebook' and 'post' : fost
Guy1 "Hey.. did you see that fost from Kristina?!?!"
Guy2 "Yea.. that's wayyy too much facebook drama for me."
by bmac1 July 02, 2009
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2.
An extra miniature leprechaun smoking obscene amounts of crack cocaine.
yo man check out that Fost man hes crazy.
by Brick Fost January 20, 2011
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