Any male that is a homosexual. Usually used in public(as many people do not know what it means) to be very derogatory while the target is unknowing of the remark.
Jaden: Look at that kid, he's such a fag.
Brock: Fuckin' polesniffer.
When you sniff your toilet paper after you wipe your butt.
D: (comes out of the bathroom), Hey K do you ever sniff your toilet paper after you wipe? You know just to see if there is something wrong with you?
K: Oh my God that is so disgusting you are a poop sniffer...