/verb/ 1. to administer a beating on someone, usually using only hands, feet and other natural weapons
2. to verbally berate someone so badly that he is ashamed to show his face in public
Back off! Do you want me to open a can of whup ass on your bitch ass?
To take a very nastycrap. Usually explosive diarrhea. The term is derived from the sound of the poo splashing into the toilet water along with the contents of the toilet generally look like vegetable beef soup.
"Oh man, my stomach feels jacked. I think it's time to open a can of soup."