J-O hand - The hand that you use to get your rocks off. The other one i

The hand that you use to get your rocks off. The other one is just there for backup.

My J-O hand is the main guy. The other one is just the backup.

I gave my J-O hand a raise. The other one got a raise too, but it didn’t do anything.

My J-O hand is the king. The other one is just a pawn.