I've always thought it would be fun to put little, pressure-sensitive mini-landmines down all the holes on the golf course, then just sit back with a cool drink and watch...

Then too, putting a spring-operated thingie in there that instantly tosses the ball back out would be funny, wouldn't it?

Even funnier might be to put a pipe down there that delivers the golf ball into an inacessible underground chamber when the little trapdoor at the bottom of the hole opens, which happens right after the ball enters the hole. The trapdoor then closes. The puzzled golfer will find only an empty hole when he goes to retrieve his golf ball.

I have a friend who hates golf so much that he launches into a tirade about it whenever he sees a golf course or hears mention of one. He figures they are destroying natural habitat, and he's right about that, but he's not improving things any by having a fit about it all the time...he's just blowing off steam. ;-) If he had some real initiative, he would set about committing some of the acts of sabotage that I suggested earlier in this post.