Ear rub
When someone rubs their ear or sucks on it, it usually means they're about to get laid or get caught in a stupid lie.
My mom started rubbing her ear, and 10 minutes later, my dad came home with a pizza and a wink.
He sucked on his ear like it was a lollipop, and then we all got kicked out of the restaurant.
She rubbed her ear so hard, the neighbors called the cops thinking she was possessed.