Who's there?

Luke has taken to telling knock, knock jokes lately.  His favorites:

"Knock, knock." "Who's there?" "Canoe." "Canoe who?" "Canoe get a plug and stop this leak!"

"Knock, knock." "Who's there?" "Banana" "Banana who?" "Knock, knock." "Who's there?" "Banana" "Banana who?" "Knock, knock." "Who's there?" "Banana" "Banana who?" "Knock, knock." "Who's there?" "Orange" "Orange who?" "Orange ya glad I didn't say banana again?" 

I'm guessing that you're not nearly as tired of reading the last one as I am of hearing it over and over...and over again! I love 5 years old that are learning new things and repeating them over and over again...