When a driver fails to use their brakes when a crash is happening ahead of them. Usage started in the late 90's when ARCA (Automobile Racing Club of America) was first aired along side NASCAR Winston and Busch series races and viewers noticed that when a wreck happened in front of the entire field, nobody even attempted to stop. The term is now used to reference easily avoidable crashes in videogames and racing simulators such as Forza Motorsport and iRacing.
to tell someone to slow down when trying to jump conclusions about someone or something; to slow your role; to caution another concerning any particular matter
When you've reached the point with your best Bro that a fist bump is just not affectionate enough. Take your relationship with your Bro to the next level it's simple, gently kiss your fist then proceed to fist bump as usual. Now your Bro knows how you really feel