The expression big man is full of complex social, relational and emotional connotations. In it's literal usage big man can refer to a tall, stout or muscular man:
big
adjective (bigger, biggest)
1.0 Of considerable size or extent:
man
noun (plural men)
1.0 An adult human male:
ODO
It can be used as to compliment or encourage maturity in a boy:
big
1.2 Grown-up:
man
1.5 A person with the qualities associated with males, such as bravery, spirit, or toughness:
ODO
It can be used as to compliment a man or a boy:
big man
noun
a man of the highest status or power within a group, as a leader
Dictionary.com
6
bigman
A very large, important, man. One who has many friends and great luck
in the sexual world. A man of great power or might.
by Tyreek May 14, 2006
Urban Dictionary
It is part of a colloquial set phrase with similar complimentary meaning:
big man on campus
noun
a well-respected or popular student
Dictionary.com
It can be used to console a smaller man:
12
bigman
Ironically, a salutation to someone small in stature...
by derangedpoet July 14, 2003
Urban Dictionary
It is sometimes used to mock people:
TOP DEFINITION
Big Man
A male human being who does or has done something that makes them feel
superior to others, or very good about themselves, even though they
know that their accomplishment doesn't truly mean anything.
Just a few examples of being a Big Man include:
Driving much faster than the person in the lane next to you
Eating more than anyone else at a party
Having a vanity license plate with a "cool" word
Beating someone by a lot in a game
Wearing sunglasses all the time
Drinking more alcohol than someone else
Having a "cool" nickname
Cracking your knuckles for emphasis
by Rufus Rosenstein August 17, 2004
3
Big Man
A hard gangster. Somebody who is the top shooter and thinks they are
invincible and are a player with the ladies.
by BLOOD DIAMOND June 04, 2009
8
bigman
Sarcastic response to someone bragging about something.
11
Big Man
A person of great stature that towers above all of us, except for the
baby giraffe, often gets stuck in small places and has tendency to
become tired and agitated. also can become unsatisfyingly hungry.
often performs stupid acts then lives to regret them because of peers
such as the baby giraffe
by mysticmike666 January 28, 2009
13
big man
A term used sarcastically towards those who make petty insults from a
position of anonimity.
by Gumba Gumba August 03, 2004
14
Big Man
a huge over weight man you loves getting totaly stupid faced and
pretending to be passed out so all his frends will tea bag him in the
mouth. ass well as paying a fat hooker to give him a slater
by boss October 25, 2004
Urban Dictionary
It has several other social connotations that influence the meaning of the phrase:
2
Big Man
An extremely large piece of shit.
by Agatster February 08, 2009
4
Big Man
A character from Robert Kelly's hip-hop opera "Trapped in the Closet".
Big Man also happens to be an asthmatic midget stripper. The severity
of this character's random traits lead some to believe that the
outrageous occurences of R. Kelly's hip-hop opera are just a ploy to
make the public forget his "golden shower" upon a girl not yet of age.
by RSB December 26, 2006
5
big man
the nickname for Julius in the show Everbody Hates Chris...
by potattto February 10, 2011
Urban Dictionary
Conclusion:
A phrase so full of exotic meanings can be risky, so if you use big man in any way other than its literal sense, you should be confident in your relationship with the people you are talking with. Since the exact meaning will be determined by tone of voice, facial expression, and body language as well as the emotional, relational, and social context of the situation, there is a lot of room for misunderstanding.