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A muscular tube leading from the external rectum to the opening at the end of the alimentary canal through which solid waste matter exits and solid mass enters. Typically found on a human male (pending gender identity).

A gay slang term coined by Gay PornStar Pierce Paris.
The "Man Clam" is usually opened by a finger, tounge, strap-on or penis.
by @pierceparisxxx August 06, 2017
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2
when you're wearing tight pants, and you kneel down for something, and the seam splits your ballsack creating a man clam
The other day at work, Ray picked up a box of paper and had a giant man clam going.
by cornwreck November 08, 2008
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4
Originating from Manhatten Clam Chowder Soup. Man Clam evolved into what was once known as a mangina where a man tucks his shit back and therefore make a man clam.
Robbie does the best silence of the lambs impression with his gnarly ass man clam!
by Tom Roofer June 21, 2010
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5
When a man has bunched up pants in the front that resembles a pair of pants in a vaginal crack (aka camel-toe). Similar in apparance to a moose-knuckle, the man clam lacks the "junk" pushed over to one side.
He was sporting a really bad man clam in his chinos.
by tngal April 18, 2011
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