Having an insult that you intiated turned against you.
TophatManiak was asshatted when he tried to correct the spelling of "Duct Tape" to "Duck Tape" and FlatLiner told him that he was a dumbass and it was in fact spelled "Duct Tape".
A colorful way to describe the boorish and often taxing antics of a foolish and uninformed individual; an act or series of acts committed by an asshat.