crotch-gazer
One who continually gazes at and notices the crotch area - be it front or back, be it man lady or animal.
"Did you see those big ol' balls on that dog?"
"No, but I'm not the crotch-grazer of this group."
"My friend will always tell me when my fly is down; she's a total crotch-gazer."
"No, but I'm not the crotch-grazer of this group."
"My friend will always tell me when my fly is down; she's a total crotch-gazer."