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An insult that means pretty much the same thing as "Loser" or "Tool" "Jerk" or "Nerd".

It can also be used as a verb to describe someone's uncool or obnoxious actions.
Eric is such a bohth! He comes to my party, and totally bohths it up by spilling a drink on the floor.
by Incest With The Petersons May 03, 2010