''Knock, knock.'' ''Who's there?'' ''Donut.'' ''Donut who?'' ''Donut ask, it's a secret!''

• Brighten their day and give 'em a giggle with Knock Knock Jokes: Side-Splitting Lunch Box Jokes.
• Featuring funny, silly knock knock jokes and colorful pictures on coated cards!
• 60 different cards.
• Tuck one in your child's lunch each day.
• Heavyweight card stock.
• Fronts of cards are coated.
• Parents can add personal notes on the uncoated card backs.
• Lively full-color designs.
• Easy-to-read jokes.
• Cards come packaged in a reusable box.
• Cards measure 3-1/4'' square.
• They fit easily in lunchboxes, lunch bags, and backpacks.
• Amusing pictures combined with funny wordplay will bring a smile to their day!