One who is in a hurry to take shit, so they are forced to pinch it off, before they are finished. It usually leads to an uncomfortable feeling in someone's ass.
Man, my ass is killing me because I had to pinch the loaf while at that party.
by Ultimate Brad November 17, 2009
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To expel solid waste from the anus. Refered to in the movie "Shawshank Redemption".
guard: I'm gonna go Pinch-A-Loaf, so this stuff better be cleaned up before the wardon gets back
by Ryan Hershbeger June 2, 2006
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Pinching a loaf refers to when one's sphincter clenches up mid-bowel movement, and cuts the egressing turd in half. The result is usually that one will have to wipe oneself raw in an effort to return one's rectum to a pristine un-befouled state of cleanliness.
Wife: Honey, what's taking you so long. We're going to be late.

Husband: I pinched a loaf, dear. Now I'll have to take another shower.

Wife: Oh, the humanity! I'll see if I can push back our reservations.

by Hoopermazing September 8, 2006
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Or to pinch a loaf - having a shit
1. yo bitch get my dinner ready, i'm gonna go pinch a loaf
2. i wouldn't go in there for 35-40 minutes, some bastards' pinched a loaf
by Bob April 6, 2004
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Using your sphincter muscle to "pinch" a loaf of shit that is hanging halfway out your ass and won't drop of its own accord. Pinching a loaf always results in extra-messy wiping.
"Hurry up and finish taking a shit, we're already late! Pinch the loaf if you must!"

"Thanks for suggesting that I pinch a loaf; it worked. Now I have to spend 5 minutes wiping, then we can leave."
by bingobastard March 28, 2009
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The act of dispursing poo out of the anus. Slang terms include: pinch a mean one, dropping the kids off at the pool, taking the browns to the super bowl, taking a dump, lose some poundage, drop a load, etc.
Hey man, I really gotta Pinch-A-Loaf, can I use your bathroom?
by Monnor Cunn July 20, 2010
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