The more offensive version of douchebag. Douchebags are relatively good things (keep those cunts clean), so, naturally, shower sacs would be horrible things.
Sarah: You're such a douchebag!
Val: Thanks, but you come off as a shower sac.
Sarah: Ugh! Fuckmuppet!
Val: Thanks, but you come off as a shower sac.
Sarah: Ugh! Fuckmuppet!
by Mike McShower Sac September 2, 2007
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