look up any word, like blumpkin:
When you take a bottle of shampoo and stick it in your ass, squeeze as much of it into your rectum then blow it all over some bitches hair. Resulting in a mixture of shit, shampoo, and hair.
So you wanna come over and I'll give you a good ole fashioned Shampoop.
by Robo January 03, 2005
a girl named emma who claims she slipped in the shower and got a shampoo bottle stuck in her ass when in reality she put it up there on purpose for an orgasmic experience
Emma was showering and got lonely so she stuck a head & shoulders bottle up her ass thus performing the shampoop
by beeb0 August 21, 2006
Blue liquid used to clean a toilet bowl. Can also be called, toilet bowl cleaner, but that's boring.
Boy: "Mommy, what is that stuff called that you are using to clean the toilet?"

Mom: "Umm, toilet bowl cleaner?"

Boy: No. I think it's called SHAMPOOP.
by momof4boys August 19, 2012
To mischievously replace one's shampoo with feces.
What the fuck is in my hair?!

by Santa? June 23, 2010
A term used to describe the usage feces to wash one's hair.
The girl, wigged out so much on acid that she convinced herself that a shampoop would be a good idea.
by Blindswordzman March 04, 2009
When you take a crap, clean up, and then realize.. ugh, I guess I wasn't done after all. shit, wipe, repeat.
A: Dude, you OK? You were in there an hour.
D: Yeah, had a bad burrito for lunch. Had to shampoop 4 times!
by littlerabbit4 August 28, 2014