booster party

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