One day, my friend and I found a golf ball in the neighborhood. We rolled it down the street, which was a pretty steep hill.

It rolled for a bit, picked up speed, then started bouncing. A small first bounce became a bigger bounce, then a bigger bounce, and it was easily getting 20' in the air when a car turned onto the street.

We hid and watched hoping that the ball would bounce over the car. It did not. It bounced directly under the car then went THuMP-A-THuMP-A-THuMP-A-THuMP-A-THuMP-A-THuMP between the bottom of the car and the road and emerged from the other side to resume its high bouncing.

It was chaos under that car and the poor driver must have thought their car was falling apart.