Idiot BMW X5 Driver Brake Checks a 40 Ton Truck

From that land that features the very best of dash cam footage, Russia, comes this video where a BMW driver takes personal offense towards a large truck that apparently cut him off. The BMW driver then decides, like a genius, he's going to get in front of said truck and teach him a lesson with a series of increasingly poor brake checks.
Learn from this man.
Do no repeat his mistakes.