Knock Knock funny Knock Knock Who's There? Ahmed Ahmed who? Ahmed the payphone trying to call home. All of my change I spent on you. Knock Knock Who's There? Daisy! Daisy who? Daisy me rollin, they hatin Knock Knock Who's There? Wendy! Wendy who? Wendy wind blows de cradle will fall. Knock Knock Who's There? Britney Spears! Britney Spears who? Knock Knock Who's There? Oops I did it again