Top Definition
A needy, attention-seeking man who focuses on and worries about himself, particularly his own health and medical issues, which he will discuss ad nauseam with anyone who will listen. He will undoubtedly include TMI in his Facebook status updates on a regular basis.
Jane: Are you going out with Mark tonight?

Tori: No, I discovered he's a huge mangranny!!! Last night he freaked out just because his heart rate increased when he walked up a flight of stairs.

manbaby
by P.J. Findley July 25, 2011

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