Online gaming: A person who sets up a secondary account which they use playing with a rival team. They help the rival team to lose, thus contributing to the progress of their primary team.
Blaze: WTF!? I just got killed by a guy on our side!
Silentsword: Kick him from the game! Get a life you fucking booster!
Booster: haha! You got owned! Your side sucks ass! You should join us!
A person who steals items from retail stores only to then sell on the streets, usually for a discounted price.
"A booster is a person who jacks from the retailers, then sells it in the hood for dirt cheap resale." - from I Love Boosters! by The Coup
In Modern Warfare 2, a person or group of people who use Tactical Insertions to their advantage, go to a rarely-used place on a map, set the insertions, then continuously kill each other to get a free nuke or a bunch of free headshots. This is considered complete and utter cheating and is commonly rejected by professional players. MW2 pro "Sandy Ravage" has a series on YouTube called Booster Justice which is him killing boosters to no end.
Yo, want to boost?" "No, I don't cheat, you booster.
A word for a car thief
Memphis Raines was told to be the best booster in the car stealing buissnes
Someone who steals for a living. Usually cars, clothing or jewelry.
First guy: "I know she can't afford that purse, she's broke as hell."
Other guy: "She's a booster, I got some Jordans from her the other day."
Someone who never buys breakfast, lunch or supper. Or even the odd beer for the fellas.
See Fred White
Mooch. Hey Dwayne, did he pay his bill? No he pulled a Booster.
When used in video games,a booster is a player who gains points by unfair means.A booster will usually have another booster with him,or sometimes go into a lobby with a game full of other boosters.The most common ways of boosting involve one player(or one team)standing in one spot the entire game while the other player(or other team)kills them for points.Thus,getting points and leveling up faster without doing any work at all.It would be like doing no work,and getting payed overtime.
Booster 1:Okay,stay there and don't move.
Booster 1:Alright I ranked up.Now you do the same thing.