Ass-Man
Natis Homo Erectus. The Quintessential horndog seeing that the buttocks are the rawest form of pleasure for male homo sapiens. It is reminiscent of our ancestral past when most of us would exclusively have nasty in and out from the back since the vagina was turned pointing to the back. That is, until the dawn of bipedalism in which evolution not only changed the orientation of the female vagina (pointing down), but also (and some interpret this as a mistake of evolution) forced the male to now face his potential mate-for-eternity and communicate through sweaty and embarrassing facial expressions that would otherwise be a sign of constipation in polite society.
Dude #1 - "dude man, look at the size of that ass! damn! fuck yeah! you know I wanna..... (and other ancestral hoots and hollers)"

Gentleman - "dude, your such an ass-man. You're disgusting. You have no idea if she wiped or not"

Dude #1 - "(more ancestral hoots and hollers)"