Shagarrhea 

A most unfortunate occurrence of onset, explosive diarrhea just prior to scoring some poon.

I had my hand down her pants and was knuckle deep hearing the words “Give it go me” when all of the sudden it was shagarrhea time.

Shagarrhea by Eaton Holgoode January 7, 2019

shartrrhea 

Shart and diarrhea, really shit fart and then diarrhea. And no, not a shart pizzeria.

Definition 1 (INCCORECT VERSION):

Dude 1: Yo! Wanna go to the shartrrhea?
Dude 2: Do they sell shart diarrheas there?

Definition 2 (CORRECT WAY):
Dude 1: Dont go in the bathroom I just did a shartrrhea in there.
Dude 2: Heyy let me eat it

shartrrhea by an idiot thats an idiot April 9, 2021

shartarrhea 

The act of releasing a shart (a fart so vicious that it releases an amount of shit from your bowels) and having the resulting residue trickle down your leg(s) after deflecting off any adjacent material that is in contact with your bum.

Projectile shartarrhea- the above, but with the intention of making it public, due to the fact that you are not wearing pants/underwear

I should have eaten some celery with those hot wings, cause I woke up with an intense case of shartarrhea.

shartarrhea by FDR's roommate April 16, 2009

Projectile shartarrhea

see shartarrhea

When I see Katie, I'm going to projectile shartarrhea on her chest.

Projectile shartarrhea by FDR's roommate April 16, 2009

singarrhea 

a serious disorder in which the victim sings his or her favorite song then immediately has the urge to defecate expelling massive amounts of diarrhea in any place readily available.

"today at breakfast I accidentally sang my favorite song and took a shit on my sisters fruit loops, damn singarrhea."

"because of singarrhea my fish is dead."

singarrhea by lmao rawr April 14, 2009

shiarrhea 

When stupid people won't stop talking about Shia LaBeouf they are said to have shiarrhea.

Airhead 1: OMG! Shia is sooo hawwwwt in Transformers!

Airhead 2: I knoooowww rigghhhtttt?

Me: Mmm yeah we need to get you some pepto airhead #1. You've totally got shiarrhea.

*Airhead 2 points and laughs*

*Airhead 1 turns red*

shiarrhea by lilwangster July 9, 2011

Shartarrhea 

When you thought you farted and then thought you might have sharted, but actually you had shartarrhea.

My wife had a colonoscopy and fell asleep. Suddenly she woke up when she thought she farted, then she thought she might have sharted, but actually she had shartarrhea.

Shartarrhea by FloridaFour April 26, 2019