Making poopies refers to the act of taking a dump or taking a shit. This is the process of emitting fecal matter out of one's posterior orifice. I don't know why the term: 'taking a shit' caught on, since you're actually 'leaving' a shit'. Making poopies can be a means of describing your current situation or that of someone or something else. This expression can be used in differing tense's as given in the examples below.
Honey, you're not gonna believe this, but I have to make poopies.
Hey Louie, where's the poker dealer? Oh, he's in the shitter out back making poopies
I've gotta stop eating those damn peppers before I bonk my babe. Tried to slip out a silent one during the hot action and out came some loose poopies. She was pissed but laughed anyway. Made me sleep on the couch.
Wiping an ass back to front with the result having shit smeared across the back side of the scrotum. People with this condition typically feel a crusty, foul smelling, and very uncomfortable sense of unease while presenting an extreme lack of personal hygiene. It can be devastating for the partner when participating in sexual intercourse. The only way to aviod is wiping the rectal region with 3ply toilet paper in a front to back manner.