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an infant-sized man. an adult male who fits into and wears baby clothes.
he never grew out of his manfantile onsies, and continued to wear them throughout his postmature manfancy.
by Pingping, He December 03, 2008
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Manfant - Full grown adult male encapsulated by a 48 to 60 inch tall child-like body. A short adult male who compensates his shortcoming with attitude.
1. Chris is such a manfant, the dude is 40 years old and is only as tall as my ballsack. What's up with that?

2. Carter came over today wearing a custom made infant bodysuit, what a douchebag manfant he is...

3. Dude, manfant came running around the corner from the living room into the kitchen and headbutted me right in the sack. It hurt so bad, I bout shitted my pants.
by waarlok April 21, 2011
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