Arnold Schwarzeneger and Sylvester Stallone are officially completing their transformation into Walter Matthau and Jack Lemmon. Shortly after announcing plans to team up together on the new film The Tomb, Arnold posted the above photo of the two aging beefcake superstars hanging out at the local shoulder-resetting joint. “After all the action, stunts & physical abuse shooting The Expendables 2 and The Last Stand,” explained Schwarzenegger, “It was time for a little tune up on my shoulder. Look who was coincidentally waiting in line behind me for his shoulder surgery. Now we’re ready for another round of great times and action when we shoot The Tomb. #greattobeback” Yep, just a couple dudes, hangin’ out, gettin’ surgery. What do you think they’re talking about? Post your best guess below. I’m betting that Schwarzenegger just told a joke, and the joke was: “Jeremy Renner.” And Stallone is just laughing and laughing and pressing the morphine button and laughing…

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