1. When a person gets bruh'd so much that you will physically be pushed backwards by the bruh force.
2. Using an insane amount of bruh force to physically push the bruh receiver backwards.
The "Bruh Momentum" is a complex protocol in which the equation of (BR x Epicness of said moment) + (UH x Idoitness of said moment) = Said "Bruh Moment"
"With the use of the Bruh Momentumwe can concur that 9/11 was a brUUUUUUHHHHHHHHHH moment."
kid in the backseat: *turns on car light*
Dad: O god O gosh were all gonna die turn that light off.
As you can see the bruh momentum is very high in this instance because you know a bruh moment is gonna happen as soon turn on that light