(n.) it's a poop that is so long that it curves back around to form a solid ring of poop.
dang tommy, you're good at this pottytraining thing. you just left a huge poopoloop in your potty!
To defecate whilst engaging in the popular daytime activity of hula hooping.
OR to poopie whilst waving one's rear end in the air.
When I visited my friend the other day her daughter was practising poopolooping in the garden.