Someone who pointlessly knocks on the door.
Answer is open the door and just put the elephant in the fridge.
He didn't use enough force...
Knock on the hatch.
A. Because she has no arms. Q. Knock knock *who's there * A. Not Alice...
A visit from the university board of ethics.
He didnt use the main stream
Someone who knocks on your door for no apparent reason.
Work smarter not harder people.
An argument
All dressed up, with no place to go.