punching, n.Definitions

Punching is kicking with your hand.

Punching is very aggressive petting

Punching is stabbing with your fist

Punching is an enthusiastic hi-five.

Punching is slapping at a different angle with your fingers curled up.

Punching is a fist bump to the face.

Punching is throwing bones at someone, bones which just happen to be connected to your arm.

Punching is the same thing as touching, only done really fast, with your knuckles, and without stopping until you've reached bone or a vital organ.