Which Batman/Joker comic did this scene come from?

I don't have the scan anymore, but it was a pin-up page of Joker in his boxer shorts, perched on Batman's chest (who was on his back on the floor in an alley or corridor somewhere), and for some reason Joker had a sword pointed at Batman. What is the name of the series or the comic that this page came from? It was a pretty recent comic, 2009.