Top Definition
When an adolescent boy who becomes unexplainably grumpy and irritable with people he usually gets along well with. When questioned about his attitude, he will snap "IM FINE," leaving his friends/girlfriend in a confused and worried state of mind. Usually wears off withing a week, but if symptooms persist for longer then contact your pharmasist/psychiatrist for more help and advice.
Person A: "Joe just walked right past his girlfriend without even a smile, whats up with him?"

Person B: "Dont worry, he's probably just got Man-PMT again."
by Spaztoid111 September 03, 2008
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