Love through Laughter! Let someone know how much you care about them on Valentine's Day or any other with an illustrated joke from Brenda Ponnay. Knock Knock, Olive You! is filled with funny jokes for kids celebrating love for each other. Each page features one illustrated joke. Here's a silly sample: What did the farmer give his wife for Valentine's Day? Hogs and kisses. Knock Knock, Olive You! is part of the Illustrated Jokes series from Brenda Ponnay. Other titles include: Fart-tastic, Too School for Cool, Knock Knock, Boo Who?, Knock Knock, Moo Who?, It's Snot Fair!, Knock Knock, Lettuce In!, Knock Knock, Blub Blub!