Her head bobbed forward as she studied Milo's face.

The Logian sat straighter and his head bobbed forward.

He leans into the lectern, his head bobbing forward for emphasis.

He seems to move too much, sometimes bobbing forward like an actor uncertain his words will reach the listener four feet away.

He let go suddenly, and her head bobbed forward.

The limousine slowed, causing the passengers to bob forward.

Hawkeye bobbed forward and reported in a low voice to his invisible chief.

The young man was being scolded for some error; in deep apology, his head bobbed forward and back, frequently.

The innkeeper bobbed forward to give him an amiable slap on the shoulder.

He saw the judge and bobbed forward with an exclamation.