Brake check;something you do, mostly, when you get mad at some other drivers in traffic. To let them know you’re pissed/mad at them.

But some of these guys don’t think about the fact that a truck can’t brake that fast and hard like a car does and they learn it the hard way. LoL

https://youtu.be/7ayioaA_8hQ
https://youtu.be/Y1FhiOMkZSo