For those who don't know, physical attacks rarely leave marks on my skin, I don't usually get bruises and most surface damage heals pretty quickly.
Now observe..
Darren slapped my arm.
He doesn't know why he did it, I don't know why he did it, but while grappling he slapped my arm with quite a bit of pressure.
By quite a bit, I mean the force was enough to make me fall to the floor, and afterwards the tips of my finger felt like someone was pushing hot needles into them, for about 20 minutes or so.
The mark itself stayed on my arm for an hour afterwards.
When Darren placed his hand over said print, you could clearly see it matched his hand. This makes it a hand print.
Just thought I'd share that. :)