Knock Knock Jokes 6 Knock Knock Who's there? Aladdin! Aladdin who? Aladdin the street wants a word with you! Knock Knock Who's there? Alba! Alba! Alba in the kitchen if you need me! Knock Knock Who's there? Alexia! Alexia who? Alexia again to open this door! Knock Knock Who's there? Alfalfa! Alfalfa who? Alfalfa you, if you give me a kiss! Knock Knock Who's there? Alfie! Alfie who? Alfie terrible if you leave!