When I lived in New Jersey me and a buddy would make stick "bombs" on blind turns and hide in the woods watching the carnage. A stick bomb was just a pile of sticks in a low pyramid that a car couldn't get over. In retrospect I'm surprised we never made anyone swerve off the road and wreck badly... but hey were were like 8-9 and thought it was funny.
Well one day we "stick bombed" my buddy's mother's brand new Audi.... cracked the front bumper and tore up the exhaust... I'm not sure if he's ever told her it was us to this very day. He's an Opthamologist now
