Usually on Xbox 360, is a way gamers use to obtain several achievements in a short period of time by using teamwork, glitching, or whatever means necessary to accomplish diffcult achievement criteria.
friend1: Man i need at least 1000 kills on this game for the achievement but its taking too long, what should we do?
friend2: Easy! We can invite all of my friends to join a match. They can just sit there while u kill them over and over for easy kills!
friend1: So you mean boosting?
friend2: Yup my friends have all the achievements anyway!
When your girl or your man riding your throbbing cock, and you give them an extrafast, unexpected hard thrust, and they slightly move up as if flinching as a reaction to your thrust.
Got bored last night so I started boosting my girl during cowgirl.
Boosting is when you have a turbo car & you boost it by accelerating and it increases your speedtwice as fast or more than if you had a naturally aspirated car. It's so much fun hitting boost & everyone looks at ya car when ya boosting it.
(Driving down the main straight of town & *Jamie yells out the window of his N/A Subaru RX)
"Stop boosting your car, it makes my lil 4 cyl rice burner look like a bagger".
(Me)"My car has boost, I can't help that Im constantly boosting it. It's fun!"