Last night it wasmaking an appearance on the Late Show with David Letterman . On Thursday night it was’ chance to take a shot at the late night icon.Well, she did that and more, taking to the streets to have a knock with the tennis enthusiast, then engaging in a little contest, which was wildly entertaining, to say the least. Serena and David played a game of “who can smash this storefront window?”Naturally Serena, despite wearing very fashionable high heels and a skin tight dress, came away with the victory. Pretty hilarious stuff. Drop down below the jump to see more of the world No. 1’s appearance with the late night mogul.