jittery shit 

Super explosive diarrhea.

Bro. I've gotta take the most massive jittery shit!!!

jittery shit by Peteysoftly February 9, 2014

jitter shitter 

Someone who inexplicably feels the need to poop whenever they are nervous.

Bob is always in the bathroom before a test; he's a total jitter shitter.

jitter shitter by Brianbratcher February 14, 2015

Shitter Jitters 

A feeling of fright or uneasiness about defecating in a public or foreign bathroom.

Dave: Why is John so pale and nervous?

Walter: Oh, he just has a bad case of the Shitter Jitters because we're at a party and he has to drop a deuce.

Shitter Jitters by Silver Panther April 27, 2010