1
how hard you can whack something, or get whacked by something, anywhere on your body (or anywhere that makes you laugh, like a guy’s junk).
I got a MacKeenigits of 10 when the door slammed into my crotch.
My brother gave me a MacKeenigits of 9 when he threw a shoe at my face.
The cat gave me a MacKeenigits of 5 when it ran into my knee.