B - Donky Slap
When you whack your dong on someones butt. The bigger the butt the better. And you hope it makes them scream.
Bro just did a donky slap on my cousin and she ran out of the room crying.
At the party I did a donky slap on the mayor and he fell over.
My mom did a donky slap on my dad and he got a bruise.