Jonas Brothers Fangirls means in slang: These are usually stupid girls aged between 12 and 17 who pray, worship and fantasize about having *** in the Jonas Brothers’ company. These girls are mindless followers of the Jonas Brothers who cannot spell argue and can’t think of any other reason than their inability to look good. These people are zombies that you cannot legally kill. (in Slang Dictionary, added by Reuben Powell)