He got up and jerked a thumb for the man on control room watch to take over.

She jerked her thumb at the back of the store.

She jerked her thumb directly across the street to a building one story higher.

He jerked his thumb, as it seemed, at the other man.

He jerked his thumb in the direction they were to take.

He jerked his thumb toward the town square behind him.

Then he jerked a thumb in the direction of the room they'd just come from.

The big human jerked a thumb to point in the direction.

He jerked a thumb over his shoulder at the wall behind him.

He jerked a thumb in the direction of the house.