different ways to play bloody knuckles?

Question

what are some of the ways you know?

Answer 1

I always used to play it holding a key or a set of keys. Since there is guaranteed to be blood, its more gratifying. The new objective is to see who can withstand the pain the longest.

You can also flick quarters at each other's knuckles until you draw blood.

Answer 2

That's a stupid game. Play slapout. Slap eachothers open palms until one of you gives up.