Ear Bag
A guy sticks his junk in the girl's ear like it's a cup. The girl is usually down on the floor. If she's got a strapon or a fake junk, she might make him the bag and stick his face in her ear.
He did the ear bag during a car ride. The whole family heard it.
She did it on him during a yoga class. He fell over.
He did it in the middle of a pizza shop. The chef told him to leave.