A mixture of vomit and poop. It can be A, when you vomit then poop nearly simultaneously, B, when you vomit poop, or C, the product of Vomooping.
Kevin: Last night I got so wasted and sick I had to vomoop everywhere.

Joe:Dude you couldn't give me a hundred dollars to touch some of your vomoop.
by actionjackson96 June 27, 2010
Get the Vomoop mug.
When you get terrible food poisoning and have to poop and barf at the same time.
Guy 1: "Hey why is he still in the bathroom?"
Guy 2: "He vomooping in there, he had a week old taco from Taco Bell."
Guy 1: "Oooooh. I hope he's okay."
by BuzzyTheScunt October 18, 2017
Get the Vomoop mug.