Nobody asks, 'who's there ' when you try and tell a knock knock joke.
Depends on which method you try....
Will Feral. Edit: I tried
Tacos. Overheard an old man telling another guy how he lost his farm in Mexico , and how the smell reminded him of tacos.
Turn toward your side!
Of course, I'm shuriken.
When you ask the patients "what's the problem " They'll say "nothing"
Look ma, no hands!"
To even out the good things that happen to bad people.
Jehovah's citruses.
Knock, knock, knockin on Heavens door
Someone who knocks on your door for no apparent reason.
Both ride bicycles and are on a mission.
FREEDOM RINGS
Because freedom rings.
