shit your brains out

To shit so hard you feel as though your vital organs have shifted and you're not sure if something you needed blasted out.

During Patrick's trip to Mexico, he drank the water and shit your brains out.

by Comic83 July 6, 2015

Shit out your brains

Something you just did when you did or said something really, really, really stupid.

"Americans are all obese"
"You just shit out your brains, didn't you?"
"No they all are"
"You definitely just shit out your brains."

by PI55 September 20, 2018