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.