The second-in-line to the throne couldn't resist a bit of horseplay at the three-day equestrian event, at which Zara Philips was competing.
Wills was there to support Zara over the course of the weekend – but that didn't mean she missed out on the tomfoolery during down time in the competition. He playfully grabbed her around the shoulders and got into a mock fist fight.
Poor Peter Phillips – there with his pregnant wife Autumn - meanwhile got his nose squished against his face.
William was there solo – there was no sign of his girlfriend Kate Middleton.
Zara was also without her boyfriend Mike Tindall, who was busy at an England training camp.