A style of wearing one's pubic hair in which the genetals are completely shaven except for a small square patch of pubic hair directly above the genetals; Thus bearing a resemblance to how Adolf Hitler styled his mustache.
Boy #1: "Did you score last night?"
Boy #2: "Yes"
Boy #1: "Was she clean shaven?"
Boy #2: "No, she had a Hitlerstache"
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