A type of stubbly, unkempt beard, as worn by back-woodsmen, hicks, men from isolated, backwards rural areas that like having sex with pigs. Similar to the one worn by 'Shaggy' in Scobby-Doo.
Wow - check out that guys hog humper!
Ifun yours goin' t' court tomorrow - best shave off that hog humper boy!
Dang - watch that weldin' torch Earl! Damn near just sit fire to your hog humper!