KnockKnock! Who's there Bring a smile to your children's faces with the 101 Lunchbox Notes with KnockKnock Jokes for Kids. Each colorful tearoff notes has a blank space on the back for an encouraging message. Use the notes to write words of encouragement or as reminders of activities or tasks or just to brighten their day! These little notes are a fun way to show your children that you care about what happens in their days away from you.101 KnockKnock Jokes 101 Tearoff Sheets Packaged in Selfseal Bag with Hanging Tag Size 4.37" x 4.02" x 0.51 (111 x 102 x 13mm)