g man 

1: (n) Any government agent, or specifically an FBI agent. Term originates from "Machine Gun" Kelly, who used it to address the FBI agents sent to arrest him in Memphis.
2: A character in the Half-Life game series.

1: "Don't shoot, G-Men!"

2: You see him several times in the game, but G Man is immortal. Don't waste your ammo.

g man by ShadowForm February 14, 2006

g man 

Character from the Half Life video game series. A secretive character with an emaciated appearance, dressed in a business suit along with a briefcase.

"We work for the same mystery. We do not speak it's name." -Vortigaunt

g man by Bajesus September 16, 2005

g man 

it means an undercover agent

yo niggah run from the g man he is trying to bust our dope deal

g man by sam deeli August 12, 2004

G’man 

A contraction of “good man” used by Irish people when praising someone for saying or doing something good.

Also used to express annoyance towards someone in sarcasm and usually used just on its own

“That girl just gave me her number”
“G’man yourself!”

“That guy just spilled his drink all over me!”
“G’man!”

G’man by greengurrlxx April 17, 2019

g man 

The man of the hour in everyway shape or form. He is simply the MAN.

OH my god, did you see G man! he is soo cool, me must get so many girls.

g man by james clee November 28, 2007

G Man 

The term G man is usually used when vilg has six pack in 5 minutes before navet.

Tjejerna i klassen- Wo, du är en g man

G man- Tack tjejer

G Man by Swedishguy12 March 22, 2023

g man 

a complete and utter fuck up who cant do his job

have you fucked the machine up g man?

g man by Anonymous October 13, 2003