You Write the Caption - 02/03/12 - Sport - The Independent Go on, make us laugh. What might they be saying? Post your caption to this picture using the comment form below and our favourite will win a bottle of champagne. The winner will be contacted by personal message through whichever social networking site they used to comment. Terms and conditions apply. Competition closes on 8 March. The winner will be announced in Saturday's paper, 10 March. One entry per person. Our favourite answer will win a bottle of champagne. If you want to vote for any of the captions, feel free to click the 'like' button next to the entries. Just for your information, here's the real caption: Boris Johnson, the Mayor of London, gestures as Giant Olympic rings are towed on The River Thames through Tower Bridge on February 28, 2012 in London, England, to mark 150 day until the Olympics begin. (Photo by Oli Scarff/Getty Images)) Click here to see last week's caption competition.