Because they don't like random people knocking on their doors
A: The knocking always speeds up.
Because if it had four it'd be a chicken sedan.
Ramen! Before you judge harshly, I would like to state that this was invented by a six year old, all on his own, no coaching.
Kevin Nash
Nothing, because he is the one who knocks.
Because you already know who it's isss! My little sister told me this joke.
They love to pump kin.
College tuition
Nobody asks, 'who's there ' when you try and tell a knock knock joke.
knock knock knock... excuse me sir, but do you have a few minutes to discuss nothing
A Jehovah's Witness.
WITNESS ME!"
They don't like any witnesses.