A tool that is used to change the amount of FPS (Frames Per Second) in certain programs, especially video games and make your gameplay smooth & lag-free.
Player 1: My gameplay is so laggy! What shall I do?
Player 2: Ahh... that's easy! Just install an FPS booster and you'll see the result!
Player 2: Ahh... that's easy! Just install an FPS booster and you'll see the result!
by 164Brian May 4, 2022

When a very large group of people steals from a store at the same time. There are normally flyers posted around snapchat stating the place, time, and location. The point is 12 can't catch everyone so it's kinda a competition to see who can take the most without getting caught. (also known as a boost)
Aye you seen they having a booster party at the mall this weekend ?
Oh Yeahhh, I'm definitely in there
Oh Yeahhh, I'm definitely in there
by SkinnyKenny December 29, 2019

It is a club where u have to renew ur membership everyday because we lose ur money like bozo's
And ur L Bozo plus ratio is high.
And ur L Bozo plus ratio is high.
by Morgafied March 9, 2022

Someone who’s a little whiney the day after their COVID booster shot because they’re feeling the side affects.
Ya know, you could ACTUALLY have something wrong with you, ya booster baby.
Listen booster baby, I’ve got real problems — like where I’m gonna come up with $1,000 for child support next month!
Listen booster baby, I’ve got real problems — like where I’m gonna come up with $1,000 for child support next month!
by Fudge On A Frankfurter November 16, 2022

An act, quote, or action that is thought to be badass and a daring or funny move that was extemporaneously thought of and is above what other people are willing to do. Such a thing will bost your rep (reputation) and keep it high, so high that you will become a cool and known member of society. A rep booster does not have to be an act or action, it can just be something that you dare someone to do or something that you are recalling you have done, then the remark "that's such a rep booster" is often used. A rep booster that is in question may be brought to the house of reps.
by paarty December 25, 2008

Someone who gets people's hopes up with talk about unity and peace. Someone who gives people a false sense of morale, which doesn't really do anything for them.
At least if the guy/girl who wasn't a morale booster/motivator wasn't going to do anything for anybody else, he didn't lie to them to make them feel like everything was going to be better than it was. Lighting a fire under somebody's ass is really just a way to get somebody else do what you want them to do, or be in line with your agenda, and being a morale booster/motivator is not much different.
by Solid Mantis January 20, 2021
