Ouch. That looks bad, get it checked out. I thought me peeling my thumb instead of a potato yesterday was bad.

You should get stitches. I had a knife close on my pinky finger once and stitches really help it heal, and they shouldn't leave too bad of a scar. Also it's your hand, and there is some intricate shit in there - I recently memorized all the muscles and tendons via art studies. You don't want any of those things messed up.

They might have stapled your head GLG XD

:< hope it heals soon and isn't too bad