Top Definition
When you do something that violates the Man Code.
John: How come Phil is not coming to the bachelor party?

Roger: Sarah wanted him to stay in and watch Sex and the City 2.

John: Yeah, that's a definite man foul.
by SafeHouse July 04, 2010
non man-like behavior
Eating Texas fries with a fork is a manfoul.
by rj2 July 02, 2010
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