Snack Break

From Ben10versepedia

The Tennyson's pull into a diner and Ben and Gwen complain about not having any actual food. They see a kid with a ice cream and they want a snack. Ben buys a candy bar but it gets stuck so he transforms into Grey Matter and crawls inside the vending machine to get it. But the Omnitrix times out while he is inside. Meanwhile Gwen is looking for spare change and she find enough in a suck. Gwen walks up to the vending machine and doesn't help him out and at the same moment his candy bar falls and Gwen takes it and eats it.