What does batty on bench mean?

batty on bench meaning in Urban Dictionary

Slang to spell it out a person who's in your area(a buddy) or likes to follow you around or is constantly with you. Is used to explain friends. They are the "batty" and you are the "bench" which they always lay on or perhaps around with. Batty i this slang implies Ass and where do you turn if you see a bench? YOU sit on it.