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2.
The crappy feeling in your stomach when taking a dump, almost like your stomach is collapsing in.
Jack's got the shit pains! I can hear him moaning in the bathroom!
by UncleNick February 14, 2012
 
1.
When you get sharp pains in your intestine. You know it's not period pain because you're not female.... 10mins later you have a Class 10 shit sub to dispose of.... "SHIT PAIN"
Rob - "Don't talk to me, I've got Shit Pain today."
Carey - "Is that like period pain?"
Rob - "SHUT UP"
by RawtenDeek October 25, 2011