By Emma Gritt George Clooney has joked that there’s “not enough drugs in the world” for him to play Batman ever again. The actor, 62, starred in the 1997 movie Batman and Robin, a film which still has the power to raise a good laugh nearly three decades on. Dad-of-two George was joined in the doomed film along with Chris O’Donnell who played Robin, and a host of big-name stars. Uma Thurman was cast as Poison Ivy, Alicia Silverstone as Batgirl, Jim Carrey as the Joker and Arnold Schwarzenegger as Mr Freeze \- but despite the film’s massive star power, it was a critical and commercial flop, putt…