jack jack
When you leave your seat and yell 'Jack Jack!' to save it for later. It's stronger than Tap Tap and started way back in Gig Harbor, before anyone even heard of Tacoma.
I yelled 'Jack Jack!' and saved my seat. My friend got stuck in the back.
My brother left and said 'Jack Jack!' and came back to a full seat.
I yelled 'Jack Jack!' and the whole restaurant moved for me.