Top Definition
A disease carried by a dude who is addicted to "beefing up"; frequently says things like "My arms are SO small", "I need to go to the gym", and "I think I'm gonna do steroids". Psychological impairment causes him to see small, wimpy dude when he looks in the mirror, and constantly self abase. Male version of the common disease anorexia.
Noah's friends became worried when he became socially withdrawn and spent all his time lifting weights. They thought about staging an intervention for Musclerexia
by chaboodle March 19, 2010
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