Where as you walk or run along naked your pecker flops up and down with each step. Said motion is called dinging because the pecker is called a dinger.
The act of dropping stones or heavy objects down onto vehicles from above, like assholes. Which is considered a "prank" but is technically attempted murder, because this can obviously killpeople (it has, and it's sad, very sad)
Those kids like to go Dinging, but if you see them call the police, before they kill someone!