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Something that is unpleasing/fucked up that dampens one mood. Usually used as "so fost"

Pronounced: Faw-st
Similar to cheeks
Keegan: Yo did you get invited to the darty?
Brandon: No
Both: Thats so fost!
by HarryCox69 January 17, 2018
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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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