A shit that is part liquid part softlumpy poo, smells and looks as much as vomit as it does shit. Check the underside of the seat for back spatter coz this bad boy sprays.
me: give it 20 minutesmate I've just done a vompoo
You: thanks I can smell it
One who wakes in the middle of the night to defecate or leaves a mysterious dump for someone to find the nextmorning.
I never could figure out why my girlfriend never poops when we are home together but I woke up one morning to a large turd in the toilet and realized she was a vampooper.