One who enjoys the delicious taste and odor of his womans ass cheeks spread wide as he takes in her sphincter aroma and then cleanses her browneye squeeky clean with his tongue. Usually following up with a bit of balls deep anal action.
As a bung tonguer, I cleansed my old ladys asshole and then she let me bust a nut deep in her bung pipe.
A person who engages in the act of licking an asshole.
Sally is a bung tonguer!