Do you ever have a day when you sit back and think, “Okay, this is enough. What we really need right now is an invasion of laser gun-wielding extra-terrestrials from some other galaxy. Let them take over and see if they can do a better job.” On second thought, however, that’s a bit excessive. Life is all about being satisfied with realistic expectations. Therefore, I would be content with an invasion of extra-terrestrials wielding cream pies. In my scenario, they would march up to each individual inhabitant of Earth, announce “this comes to you, courtesy of the Universe,” and then smack that person in the face with a cream pie. They would then get back in their ships and fly off.
The main problem with this scenario, I suppose, is that such a worldwide event might spawn several new religions.