...or was she just being sarcastic? 

Since the start of the MDNA tour, Madonna has thrown a dramatic side-eye toward Lady Gaga in the form of a "Born This Way"/"Holiday" mash-up. But starting in Atlantic City over the weekend, Her Madgesty added 10 percent more Gaga to the tour by dedicating "Masterpiece" to Mother Monster. 

Madonna has taken the high road (once Elton John's preferred route) in the mostly one-sided catfight between the two aging superstars. At her recent MDNA stop in France, Madonna reacted to Elton claiming her "career is over" and calling her a "f*cking fairground stripper" with grace and forgiveness. 

Watch a lesson in class after the jump!