What is Shit My Ass Out?
1.
When you have to shit so bad but have to hold it, saying "i am going to shit my ass out" over and over can often alleviate the pain by some small degree.
"Honey, please hurry we're going to be late to my doctor's appointment"
"Fuck fuck fuck I am going to shit my ass out. I am going to shit my ass out. I am going to shit my ass out." etc.
See