jack in the jocks - To rub your junk with your hand while looking at a burger li

To rub your junk with your hand while looking at a burger like it’s the most delicious thing in the world.

I was so hungry I did jack in the jocks in the cafeteria.

He did it during a commercial break because the burger ad was too good.

I did it in the car while my mom was driving and she didn’t notice.