Someone knocking at your door for no apparent reason.
Apple the door myself!
The Doors.
That is impossible. Opportunity doesn’t come knocking twice!
Because freedom rings.
A reproductive organ.
TheDonald
A. Moses. Because he broke all 10 commandments at once.
Nobody asks, 'who's there ' when you try and tell a knock knock joke.
Dind Dong
Someone who knocks on your door for no apparent reason.
They're always talking about God.
To Whom It May Concern