Have you ever thought yawning was contagious? Well now you can try to catch it from your iPhone or iPod touch. With the Addictive Yawn Starter you can play yawning sounds while it cycles through a bunch of pictures of people and animals yawning. On a personal note, I couldn't stop yawning while I wrote this program. For me it is the sound that triggers it but for you maybe it is the visual cues. Try it with a bunch of your friends and see who yawns first.