Wedding Royale Caption Competition

PHOTO: Prince William visits St. Andrews University.Rex USA
Prince William visits St. Andrews University with fiancé Kate Middleton in this Feb. 25, 2011 file photo.

Happy April Fool's Day. It is week four of Wedding Royale's caption competition and this photo is no joke!

Write a funny, but not obscene, caption for this photograph of Prince William and you could win a Wedding Royale mug.

Send your submissions to ABC News' royal reporter Nick Watt on Twitter @nickwattabc.

Click here to see last week's winning submission, and watch the rest of Wedding Royale.