When a dude porks something in the rear for a great while and then pulls out his shaft and notices that there is a very brown and smelly substance covering his wang because the bitch/fag he was hittin had a dirty asshole, covered in dry shit on the outside and a huge log inside.
After anally inducing Sally for a great period of time, he pulled out and noticed brown smelly shit all over his manhood. When he finished donkey punching her, he mad sure she sucked his chocolate banana clean to make it look like it did before the anal pounding
When a male pulls his weiner out of his companion's ass and immediately makes her (or him) lick his poopy penis
After a long night of anal sex, Steve fed his chocolate banana to Amanda.
When you are having sex with a girl in the ass when she has diarrhea and you pull out and have her suck it off.
I asked Susie if she wanted a chocolate banana. She said yes but had no idea what she was getting herself into.