The tendency for all men within a work of fiction to think primarily with their penises. As such they will be constantly trying to peek up girls' skirts or into the girl's locker room, and will go out of their way to either catch a glimpse of something naughty or gain a minuscule chance of finally doing the deed. Gets into weird territory when women are offended or insecure because the guy isn't being a perv. How dare you not want to ravish them! You can't win. All Women Are Lustful + All Men Are Perverts = A Party - Also Known as an Orgy and Everybody Has Lots of Sex