scratch somebody's back

The young man scratched the back of his neck, thinking hard.

Jeff stood still and scratched the back of his head.

Before long you'll be begging me to play with you or scratch your back.

Dean scratched the back of his neck with the other.

Go build yourself a robot to scratch your back for you.

He dropped a hand to the big dog's head and scratched the back of his ear.

Bond scratched the back of his head as if reflecting.

The Governor frowned and scratched the back of his neck.

When she finished, Pete scratched the back of his neck.

He looked at the sky, and scratched the back of his neck with the bat.