An old hairy man that wears a diaper and goes around saying "Daddy", "Mommy" or anything of that sort.
by Not The Real Guy March 25, 2017
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by Footlongdong January 1, 2008
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A man that is 25 years of age and older still living under there mothers roof and or a man that is that age were he should no longer be playing video games that allow them to compete for nothing but video game awards.
If John doesnt stop working at game stop for a discount and at least become a manager he will stay a man baby.
by Fonzerilli May 12, 2008
Get the man baby mug.Any man whose beer belly prudes out over his waistline causing a look of pregnancy. Side effects include low testosterone levels (man PMS), lactating man boobs, and sempiturnal diarrhea of the mouth.
DAMN, Jimmy's caring a man baby! Yeah I heard he's due next week. Well at least it matches his man boobs.
by Nate Blaze August 22, 2008
Get the Man Baby mug.When you dress your infant son in adult-like clothing such as jeans and collared shirts such that they look like a miniature grown man.
by skb1212 July 3, 2014
Get the grown man baby mug.by lol December 14, 2003
Get the manbabies mug.A full grown man who looks like a baby, and acts like a some type of awkward child. This usually includes being short, having an excess of fat, and protruding lips and/or brow. Usually to be classified as a "man baby", this person is encountered in a comic shop, an online video game, or as a dysfunctional co-worker that the manager keeps around either out of pity or relation.
I was in line at Best Buy for halo 3, and this totally sweaty man baby was ahead of me buying several weeks worth of anime porn.
by Arithmetics October 28, 2007
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