The best worst knock-knock joke ever

Emily: Knock knock!
Wifey: Who's there?
Emily: Knock knock!
Wifey: Who's there?
Emily: Knock knock!
Wifey: Who's there?
Emily: *giggle giggle* Knock knock!
Wifey: Who's there?
Emily: *giggle giggle giggle* Knock knock!
Wifey: Who's there?
Emily: Banana!
Wifey: Banana who?
Emily: Orange!! HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA *deep breath* HAHAHAHAHAHAHAHA

She's almost got the hang of it.