Someone who frequently eats out an anus. Usually used in reference towards homosexual men, but can be used towards anyone that has licks an anus.
Homosexual #1 :- "Ahh dude, my boyfriend
licked my arse til it was dry last night, I think he enjoyed it more than I did."
Passer-by :- "Batty Chugger"
Homosexual #1 :- "Excuse me?"
Passer-by :- "Your boyfriend
is a chugger of the batty, a batty chugger."