Answer:
What has hands but canβt clap?
What has no hands but might knock on your door, and if it does you better open up?
What demands an answer, but asks no question?
Deep, deep, do they go. Spreading out as they go. Never needing any air. They are sometimes as fine as hair
Often found in doctor's offices and pirate flags
People take me on walks and I run and have fun. What am I?