They have no hands to knock on the door.
Because Jesus was born in a barn.
Because she was in the shower and didn't hear him because the elephant stump was on full blast.
She had no arms. Knock knock Who's there? Obviously not Sally
He saw stars.
The octopus. I have no idea what to do with my hands most of the time, and I only have two of them.
They keep falling through his hands.
The NBA
The Incredible Sulk!
Her coach was a pumpkin