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a man who is at least 7 years younger than the person he is dating and or engaging in a relationship.
"I'm 33 and I am dating a 24 yr. old. I call him my mancub."
by 1brazilnut January 04, 2008
42 14
a young male that dates older woman aka cougar.
Ashton Kutcher is a man cub because he is with Demi Moore(a cougar).
by jen318 July 17, 2008
20 7
A male child that does something or resembles a grown man in either action or appearance.
"Look at him in those skinny jeans, he's such a man-cub!"
by SMGD October 12, 2011
2 0
n. A male who is on their way to becoming a man, but still too young to be considered one. Usually at or between the ages of 10 to 15, give or take a couple years depending on maturity.
My little brother is growing up, but he's still just a man-cub.
by Suzuka December 14, 2009
3 3
Someone who is big, but looks kind of weak.
Hey did you see that fat guy kick the shit out of that muscle bounded guy?

Yeah man, he must be a mancub.
by keahi52 February 17, 2009
4 19
Young black male, very ashy in appearance. Constantly in mind set Black. Looks weak and helpless like a baby seal being attacked by a shark. Attached to the pocket of Christopher Carlson.

Synonyms include: weak bitch, Boycalf

Scott, Justin Scott, Mancub, weak bitch, Boycalf, manatee
by Millhaus December 11, 2006
7 34