Definitions by Topnotch27

Notching 

A competitive sport where one raises their hand in an "Okay" symbol higher than that of their opponent and says "Top notch". The winner is decided by who has their hand, or notch, the highest when either both players cannot elavate their hands any higher, or when one player's notching arm is lowered.

Bill replaced his arm with a longer, synthetic arm so he could get better at notching.

Notching by Topnotch27 July 22, 2017