Top Definition
One who is generally dumb and does not understand references to simple subjects. Usually abbreviated to F.S.
Me: Dude, Johnny just got Glenn Beck and Ed Hardy confused.
Friend: What an Flour Sack!
Me: I know! He's a total F.S.
#dumbfuck #tard #slow #simple #elvis
by DaRumblyTank February 09, 2011
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