To get to your house... Knock, knock. Who's there? The chicken.
Because the chicken was having a day off!
A brick-layer!
She was worried the egg would get there first.
What difference, at this point, does it make?
The SWAT team
Because he has gnocchi
Ben knocking on this door all morning!
Someone knocking at your door for no apparent reason.
A person who stays up all night wondering if there is a dog.
The old switcheroo.