>> 1. The act of contracting one's anal sphincter to cut a log of feces off in mid-defecation.

>> 2. Forcefully preventing ejaculation by squeezing the shaft of the penis.

Man did you see the deuce he dropped? You can even tell where he pinched off.

Pinching off prevented a rather sticky coffee-break facial.
by Ryzarh November 9, 2006
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When you are taking a shit and the shit is dangling of your asshole and you squeeze your ass muscles to get the shit outta your asshole
Man i really had to Pinch Off that shit
by M2Jizzle January 4, 2009
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To squeeze one's anal passage while in the process of taking a shit of enormous magnitude, resulting in the log being cut into either two or several chunks.

This would occur if the person was scared, starttled or just needed to hurry up and carry on when they get to a suitable location to finish the job.
Women: "Come back to bed baby."
Man: "Silence sex wench!"
Women: "We can do anal.."
Man: *Starts pinching off a loaf*
by Bible Author June 10, 2014
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Take a dump. Poop. Defecate. Drop a load. Cut the crap.
A: "ugh, I think I need to pinch off a loaf"

B: "what?! you need to chipoffolo?"

A: "NO DUDE!! I said: PINCH OFF A LOAF!"

B: "Oh (pause) what the hell?"
by Metso July 11, 2008
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Slowly tightening a hose clamp around your own testicals till the fall off
Dave can't make it to the party he's in the middle of an African pinch off
by Vfhbl September 3, 2015
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To have to end the defecating process abruptly or in a hurry. Usually this phrase is yelled by someone who is also in need to use the bathroom.
Person who needs to use the bathroom: "Hey, pinch it off already!"
Person on the toilet: "Alright, alright!"
by Canned Coolwhip October 22, 2010
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1. To quickly squeeze out a shit
2. To pinch off the end of a rather large shit in order to be done quicker.
Jerry had to pinch one off as the game started in ten minutes.
by Anonymous April 12, 2003
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