The clerk behind the counter was such a fupos, he couldn't even make change for a twenty dollar bill.
by JannyGurl May 04, 2006
Acronym for "Fallacy Until Proven Otherwise." Often used immediately after an individual says something that is hard to believe or flat out absurd
Friend 1: Last night I was at a party and totally laid out this drunk guy
Friend: Yeah whatever that's a total Fupo dude
Friend: Yeah whatever that's a total Fupo dude
by Seebsknowsbest November 26, 2016
by Moosenator May 16, 2016
"Wow Bob ... you are just one FUPOS!"
"Your face is a FUPOS!"
"FUPOS fucker!"
"Rachelle, your car is a FUPOS!"
"Your face is a FUPOS!"
"FUPOS fucker!"
"Rachelle, your car is a FUPOS!"
by Megroxorz January 20, 2008