jabbin' the rattle - A stupid way of saying you’re not just using your hands to g

A stupid way of saying you’re not just using your hands to get off. Usually said when you’re being a fool.

I was jabbin’ the rattle in my classroom and my teacher saw me.

I tried to jabbin’ the rattle with my knee and it was weird.

I was jabbin’ the rattle in my car and my friend laughed at me.