On the display, there was a motor which helped Leo's head bob up and down from behind them.

Far from shore, they saw a man's head bob and disappear among the waves.

She looked down and saw the crown of her head bob beneath the surface.

She has a distinct head bob while running, something noticeable since high school.

No sign of him appeared until the Doctor saw his head bob to the surface beside the small rowboat.

His hips pistoned back and forth, meeting her every head bob.

In another moment, she glimpsed his head bob up from the current.

The passenger gave a polite bow, just a head bob.

A sudden breeze swirled around them, making the head bob on the stick.

Ayla saw her head bob up once more and pulled harder.