Wristicuffs

When nothing more needs to be said, and two people, who lack any formal or street training in any form of fighting, will have wrists bent back and forth in a slapping like motion against each other, usually slapping the face or upper torso.

A dude: Did you see Professor Tay-kit fighting with Jack Whisegy?

The Dude (AKA Duderino): Yeah Jack didn't stand a chance against Tay-kit's innate wristicuff abilities.
a dude: Wrist-a-what?
The Dude: Wristicuffs, the dude abides.