The act of not wiping your ass after taking a shit either because there is no toilet paper left, or you just chose not to wipe. Leaving your butthole "poopy".
Guy: Shit. Some asshole didn't replace the TP role, guess I'll just have to have a Poopy Butthole
The description of one'sanus being engulfed in excrement/diarrhea.
Tyrone: Salutations, Demetrius! Would thy have the pleasure to undertake sexual intercourse through our anal cavities?
Demetrius: Unfortunately, I cannot attend to such a matter at the time, Tyrone. Alas, I am suffering from thy Poopy Butthole, in which case my anus has been engulfed in excrement and diarrhea.
The butthole after a fresh explosive shit, when someone smells weird, when someone you don’t like decides to act like a fucktard, when your just straight up mad at anything. These situations can use stinky poppy butthole to describe what is going one. It can be used as a name calling word, a curse word, etc. this word has infinite situations it can be used in