the act of smearing feces upon the upper lip of an undesirable human being creating the illusion that one is brandishing a substantial mustache. often unnoticed by the helpless victim, leading to reoccurring question regarding a putrid stench omitted from the unknown location. other variations include the babaclava, the bababeard and the bababurqa.
as soon as this guy falls asleep he's getting a babatash, mark my words.
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi