by SexyChinaGod March 12, 2020

When you enter a public restroom and there is leftover fecal matter/smell from someone else in the bathroom stall.
by Nana711 March 17, 2015

A spin on the name of the game, Fallout Shelter. A Fallout Shitter is when you go to the bathroom to release your bowels and start playing Fallout Shelter at the same time, but you get trapped in the game and forever stuck on the Fallout Shitter.
Bob: Yo, bro hurry up I need to pee! What's taking so long?
Bathroom Steve: One second dog, I'm caught in the Fallout Shitter! My Vault is being raided, a room is on fire and its spreading all while Death Claws are attacking me.
Bob: If you don't wipe soon you're ganna be playing dingleberry farmer!
Bathroom Steve: One second dog, I'm caught in the Fallout Shitter! My Vault is being raided, a room is on fire and its spreading all while Death Claws are attacking me.
Bob: If you don't wipe soon you're ganna be playing dingleberry farmer!
by fakyu August 29, 2016

by Robbie raypest October 2, 2017

Prolonged leaning forward on the elbows whilst engaging in iPhone gaming during the act of having a particularly tricky bowel movement. With the result of leaving a prominent red mark on the thigh saluting your efforts.
After a heavy drinking session on the Guinness, I was birthing a beast from my ass whilst trying to beat that tricky level on Angry Birds and it left me with serious Shitters Knee.
by DeNinjabreadman December 28, 2011

by Brielle_Rose April 7, 2019

A person who spends a good majority of the day on the shitter, usually the nice roomy one on the end, doing usefull things like checking email, looking at pictures of cats, primping his pubes, and just generally wasting time so as not to be forced into doing any actually work.
Any time I have the urge to purge I check our resident shitter squatter's office to make sure he is present and accounted for.
Jim: "Where's Warren?"
Steve: "Check the bathroom, I haven't seen that shitter squatter in 45 minutes."
Jim: "Where's Warren?"
Steve: "Check the bathroom, I haven't seen that shitter squatter in 45 minutes."
by JesterPrim October 28, 2014
