On Monday, the Kensington Royal Instagram account posted a sweet video of Prince William, Kate Middleton, and their three children, Prince George, Princess Charlotte, and Prince Louis.
And while the video included Prince George giving Kate's Chelsea Flower garden a rating of "20 out of 10," that's not what has people talking.
After that cute moment, Prince William turns to Charlotte and utters some syllables that have the internet stumped.
One theory people have is that Prince William was calling her by a nickname: "Mignonette."
Anyone notice right before he asked Charlotte to push him, he called her by a her lovely nickname. someone from KP IG's comment section suggested William called her 'Mignonette ' which means 'delicate.- Blissfully_me (@blissfultobeme) 21 May 2019
Other people, however heard something different, and think he's saying, "have you been on here?"
Prince George reckons his mummy gets 'twenty out of ten' for her Chelsea garden. How sweet! https://t.co/yv1f5WVAII- Rebecca English (@RE_DailyMail) 20 May 2019
Princess Charlotte already has a very British nickname (Lottie), but it's not out of the realm of possibility that she'd have another one, too.
We'll leave it up to you to theorise what he's actually saying.
- This article first appeared on Yahoo