when you’re having anal sex and he nuts in your ass, takes his dick out and presses your cheeks together, making the cum spread all over the inside of your cheeks and ooze out of them as well
a result of anal sex, a reverse cakester is the combination of defacation through a butthole that has recently been ejaculated into, thus creating a chocolate log coated in semen.
Jim didn't pull out when he stuffed it in Sally's backdoor, so when she went to "freshen up" afterward she was joined by a lovely reverse cakester as a midnight snack.
Pretty muchthe ultimate noob. Someone that does really noobish type things is a noob oreo cakester. And no one wants to be a noob oreo cakester because Oreo Cakesters are icky.