And they were both topless! Gasp.
We can't imagine Prince William saying one naughty word other than "darn"…and even that would be a stretch!
But apparently our dashing prince has quite the dirty mouth that can sometimes get a little carried away.
We all know how much Wills loves his sporting events, but it's starting to sound like taking part in those events is bad for his language.
"can make you think he has tourettes."
Don't get too worried for little Prince George's ears yet. It's reported Wills only flings four-letter words when he's playing, so he'll be totes fine just watching a game with his boy!
We just hope Kate Middleton is ready to stick a bar of soap in Wills' mouth if he ever decides to play soccer with Georgie!
[Image via WENN.]