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

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

sniarrhea 

sniarrhea when you sneeze and diarrhea on yourself (usally happens in a public place)

Damn I sniarrheaed when I was at the theater and it was VERY quiet but I just sat there because I didn't want to miss the movie so by the time I got up is was everywhere and almost dry

sniarrhea by Nilfnog May 2, 2009