Let The Games Begin

From Ben10versepedia

While driving in the desert, Ben and Gwen are playing a game of I-Spy Bingo to see who will sit in the front and Gwen keeps winning. Ben goes XLR8 to run and find what he is trying to spy and when he places an ice sculpture it melts and a flock of ducks, which is what Gwen has to find is seen drinking the water, and Gwen wins. Ben gets in trouble by Max for cheating and is grounded from the front seat for a month.