02/08/2012 at 04:00 PM EST
He'll be back – in surgery.
Possibly feeling the painful effects of an action-movie comeback at age 64, Arnold Schwarzenegger posted a WhoSay
photo of himself shirtless in the hospital nursing a bum shoulder.
But in a "huh?" moment, the photo shows his costar Sylvester Stallone, 65, also shirtless, plugged into an IV in the next bed.
A gag picture? A scene from a movie? Well, here's Schwarzenegger's explanation:
"After all the action, stunts & physical abuse shooting The Expendables 2 and The Last Stand, 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."