That drunk fat guy sitting at the end of the stage trying to see if your thong has some how slipped over to one side while yelling at you to put it in his face for a dollar.
Someone who is easily amused and aroused by even the slightest sexual implications, and seeks them out. Is sometimes used in good humor, but such bawdy jokes can take a toll on a conversation. However, talking about sex does not make you a pervert. Making immeasurable amounts of innuendos and generally being an asshole, or peeping in on someone showering will make you a pervert. The latter also makes you a voyeur.
Friend: "Hey, we should go explore that old mineshaft."
Me: "Hehehe, shaft."
Friend: "<name> I swear to fucking Buddha I will drag you into an alleyway and pump you full of broken glass, you pervert"
Me: "Hehe, pump me."
Friend: "someone get my gun"
someone who does things (esp. endeavors of physical expenditure, i.e. work-outs) in a very extreme way, to the point of nearby observers' dismay; a sicko
Oh, wow, he's got 500 lbs on that sled-push... and he's going for another full lap--what a pervert!
Any one who constantly brings up sex or other sexual tools (reproductive system). May be perverted towards dudes and chicks, no matter how gay they sound.
Ethan: Man, your dad was good last night. Me :You pervert get away from me