by wankpanda November 17, 2008
a really gumpy person similar to a derp, but twice as ugly with out having to be caught in the act of making a ridiculous face
Jake: "Dude, did you see that guy back there"
Eric: "Yeah dude, what a buttmug"
Jake: "Yeah, what an ass canister!"
Eric: "Yeah dude, what a buttmug"
Jake: "Yeah, what an ass canister!"
by frare May 30, 2011