I guy who appreciates a bodacious bum by being clever enough to let a woman go through a door first

(noun) A successful type of theft which results in an acceptable, impressive and rewarding payday for the protagonist.

A portmanteau of "gentleman" and "pervert", a gentleperv balances manners and etiquette with deep, carnal desires. A nice, kind man that can turn his desires on like a light switch.