Keyboard Gangsta 

Someone who on an instant messaging service will mess with you and act all tough but in real life, he is a shy little boy who doesnt want to fight with anyone

Luke:John was dissin' me on MSN two nights ago but last night he didnt say a word to me.

Grant:Yeah. What a keyboard gangsta.

Keyboard Gangsta by Luke Sweeney June 22, 2006

Keyboard Gangster 

A person who will talk shit to you online, but not to your face. Keyboard Gangsters are weak people, normally the one being bullied or targetted by the class.
Keyboard Gangsters mostly talk about the person's mother, mostly saying that he is doing her or she is with more than one man.
Keyboard Gangsters mostly 'attack' on group chats. They are found all over the internet, mostly in WhatsApp, Facebook and Instagram.

This person is a real Keyboard Gangster, they will talk shit to you online but not to your face.

Keyboard Gangster by IereBoy February 8, 2019

Keyboard Gangster 

Their are two definitions to this phrase.

1. A person who attempts to act badass behind their computer screens through their own keyboards. This definition is most commonly used by the populice that was tormented in upper-grade schooling and have no spine to speak of.

2. A person who throughly thrashes definition #1 using intelligence and wit only. This populice most commonly keeps to themselves until some fool comes along that needs to be slapped down properly, they do not go around looking to be badass, they just happen to have it come to them.

Def#1: blahblahyour an idiot i am great.

Def#2: instead of trying to be a keyboard gangster why not simply learn the definitions of the words you intend to use in everyday life, please vacate the premises before i make you feel as dumb as you look right now.

Keyboard Gangster by Ender$follower December 20, 2008

Keyboard Gangster 

A person who uses online messenger services to harass other people using the service.
These people then blatantly ignore the people they have harassed the next day in person, pretending it didn't happen.

Person1: "Dave gave me some jip last night on MSN, but today he was sound with me and pretended nothing happened."

Person2: "What a keyboard gangster"

Keyboard Gangster by RealFanDan April 28, 2009

Keyboard Gangster 

All Video Game Nerds from 80s till 1999

All keyboard gangsters always on them online games trash talking and always winning

He is the keyboard gangster of mechworrier online

Keyboard Gangster by ToniChong420 February 22, 2019

Keyboard Gangster 

Customer who will not enter a store in person, or even pick up the phone, but will not hesitate to trash you, your performance or your company to Hell and back by email or online review. IF any in-person or telephone contact is made, a Keyboard Gangster will go directly to your boss and trash you there as well. Could also be described as a crossbreed of a coward and a Troll.

You can try and get ahold of him, but he won't pick up. He's just a Keyboard Gangster, yo. Just forget about him.

Keyboard Gangster by CosmosTheProfessor December 28, 2019

Keyboard gangster 

Big bad carinsy biyyy

Nothing but a keyboard gangster

Keyboard gangster by Imma get ya October 24, 2020