Knock, Knock, Who’s There?

Knock knock, who's there?
Knock knock, who's there?
Lettuce
(Lettuce who?)
Let us in 'cause we live here
And we don't want to stand outside the door all day
(Ha ha, come in then!)
Knock knock, who's there?
Knock knock, who's there?
Amos
(Amos who?)
A mosquito's calling through
He thought he'd knock instead of buzzing you
(Oh, buzz buzz, mosquito)
Knock knock, who's there?
Knock knock, who's there?
Theresa
(Theresa who?)
Trees are green 'till Autumn comes
Then the leaves turn brown and they fall on the ground
(Lovely green trees)
Knock knock, who's there?
Knock knock, who's there?
Knock knock, who's there?
Knock knock, who's there?
Knock knock, who's there?
Knock knock, who's there?
Knock knock, who's there?
Knock knock, who's there?
(Hello, can anybody hear me? I'm knocking, hello?)
Knock knock, who's there?
(Is anybody home?)
Knock knock