Actually it's BIG worries! This is a sign of an internal memory corruption. Soon you will see balls and toys appear in your snack list (maybe even items you've never purchased). Try this now: press the Reset button on the back, then select Download from the Download / Reset menu on the screen. If that doesn't clear your problem, the only option left is to do a complete Reset (select Reset from the Download / Reset menu). Note, however, that this will make you lose all your points, purchased meals/snacks/toys, friends from the friends list, etc, and you will have to start over again from generation 1. I've had to do complete resets on my V4 twice in the past three months to clear problems like this.