I can accept the possibility that life exists on other planets. With billions of galaxies times billions of stars times dozens of planets times the infinitesimal chance that life exists on any one of them harbors organic chemicals, times the remote chance the primordial sludge will egest a walking fish, and you end up with a few thousand planets that may well contain intelligent life, not including Earth ...

... which is implicit when speaking of "intelligent life."

I cannot, however, conceive of any alien culture that, having achieved the wherewithal to travel among planets, would have any interest whatsoever in snatching white trash out of rural trailer parks for the sole purpose of sticking things up their butts. Even a technologically advanced society has a sprawling class of labor-grade grunts that they can humiliate without leaving their own atmosphere. Our own world is fairly advanced, with a global computer network, space shuttles, and interplanetary explorations - a generation or three away from sending manned missions to other planets - yet we still have legions of proto-humans who make a living pumping gas, whom we humiliate in much more creative ways.

Making them wear uniforms, for one.

Even so, stuffing foreign objects in the keister of some unsuspecting dimwit still gets a laugh every time - it's a weekly show in Japan (amazing what you get on a satellite dish). You should try it some time: hide near a field during deer season, fire off a flare to get their attention, shine a bright light in their eyes, and, while they stand there transfixed, send someone behind them with a broomstick. The look on their faces at the moment is almost as funny as the expression they wear the next day on the evening news.