Someone who steals stuff from cheap stores ex. 99 Cent Store.
Someone who finds stuff and keeps it without trying to find its owner.
Someone who screws and messes stuff up and is a complete nuisance.
Vince: Hey nice leg warmers, where'd you get them?
Kat: I stole them from Dollar Tree!
Vince: You beuler!
or
Vince: Woah, did you hear about the science classroom being flooded?
Kat: That was me!
Vince: You beuler!
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