All this talk of how age has wearied them, made me expect a far more circumspect offering from the boys, but in reality it's far closer to the original films than I imagined it would be. Like those three, you are rarely more than two minutes away from a belly laugh - of which they remain the most consistent provider of, of any film series this century. A perfectly executed groin shot will never not be funny, it's art, look it up.