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.
ayon kay tngal ika-18 ng Abril, 2011
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!
ayon kay Tom Roofer ika-21 ng Hunyo, 2010