a nicer way term for someone's ass/behind
mother: Evan, please get your sit-upon off the floor, I can't pass with the laundry basket; you're in the middle of the bloody hallway.
Evan: go back to your cave. Can't you see I'm playing transformers?.
Kind of like cake farts but with sloppy Joe's. They are meant to be eaten afterwards.
Hey babe, I have a new kink I want to try out. It's sloppy joe sitting. It'll be an awesome dinner date