A "grown ass man" will always put his kids and/or family's needs ahead of his own. He handles his business and has no need to refer to himself as a "grown ass man"

If someone calls themself a "grown ass man" it is most certainly because he is being a little bitch and not taking care of his responsibilities.
I can do whatever I want because I'm a grown ass man.
by WaltJr September 12, 2014
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A guy who accepts responsibility for his actions, and carries on when the going gets tough.
Brendon is a grown ass man. He is committed, hard working and funny; generally, a pleasure to be around. He can take the ups and the downs, but always expects to be a winner.
by Little monkey October 17, 2013
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(grown ass-man) what an immature male may inadvertently, though accurately call himself when others question his ability to do anything. The Ass-man is a cross between the donkey, popularly believed to be a stubborn and unreasoning animal, and a human being.
"Are you sure you can move that bed downstairs by yourself?"
"What do you mean 'am I sure?' I'm a grown ass man!"

1/2 an hour later...
"MY BACK!!!"
"Are you alright?"
*gritting his teeth through the pain* "I'm fine. Don't say it."
"Say what? I told you so?"
by sleep =D May 19, 2012
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Being of the mindset of taking life head on instead of crying like a bitch.
DMX tried to car jack some fool while on crack and under the guise of a federal agent -- he's a grown ass man.
by Gibdaughter October 12, 2009
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A guy who accepts responsibility for his actions, and carries on when the going gets tough.
Brendon is a grown ass man. He is committed, hard working and funny; generally, a pleasure to be around. He can take the ups and the downs, but always expects to be a winner.
by Little monkey October 17, 2013
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A guy or girl the like, that is 'on top of thangs'. Essentially, responsible for his/her doings, and not settling for the subpar.
You best believe Clint Eastwood is a grown ass man yo!
by Ivan Alfaro October 22, 2006
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