Heyo people, lets give this a go shall we? Knock Knock, Whose there? ___________. __________who? You Example: Knock Knock, Whose there? Orangutan. Orangutan who? you
I think it'd work a bit better if you didn't have to finish it with a "you" necessarily. For example; Knock Knock! Who's there? Heywoodharry Heywoodharry who? Spoiler Heywoodharry up and open this door!
Knock Knock! Who's There? OhSay OhSay who? "Oh, say can you see, by the dawn's early light" Oh, good one B)