F.A.P.S.
F. A. P. S. is when you poop so hard your butt feels like it’s burning. No chunks. Just pure torture.
I had F. A. P. S. in my car and my dog looked at me like I was a monster.
My sister got F. A. P. S. and she cried like she lost her best friend.
I got F. A. P. S. at work and my boss asked if I was dying.