Another name for the bunghole, the asshole, the toilet muscle, the butt, the rosebud, the brown starfish, etc. -- the place where turds come from.
So named because it is in the area of the body where one generally leaves a shit (I know it's supposed to be 'takes a shit' but you don't take shits, you LEAVE shits!)
John didn't want to go to the dollar store with his sister this morning because his poopal area was feeling particularly shitty.
When You eat fruit loops and shit them out and they come out of your ass and make a perfect circle in the toilet. This can cause poopicanes which can bring farts up to 100 mph. Poopingaloopoffruitloops can be deadly if successfully done.
John seriously just did Poopaloopoffruitloops, his wholeneighborhood was covered in shit, and 19 people died