At first intimidating, but truly harmless glare given by mousey little who like to hide behind other people (preferebly friends) and like to talk shit they can't back up.
"OH-SNAP! Diana's Superglarekamehameha no-jutsu has no effect! I'd best smack her shit up!"
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