Top definition
The act of placing a slightly chilled object beneath the testicular bag in order to increase testosterone, stimulating the penile shaft resulting in increased penile circulation and a massive erection.
During his pre-practice nap, Matt always applies ball coolant in order to increase aggression toward his foes.

Hey Steven, have you ball coolanted today? Only three times!
by Ball Coolant September 29, 2014
Get the mug
Get a Ball Coolant mug for your daughter Sarah.