Ooh, here's one:

A hunter was out in the woods hunting bears. Eventually, he found a little black bear in a clearing, and he raised his rifle and shot it dead. But as soon as he did this, he felt a tap on his shoulder. It was a brown bear, and the bear told him "You've just killed a fellow bear. Now you have a choice. Either I eat you, or you bend over and take it up the butt." The hunter didn't have a choice, so he bent over, and the bear had its way with him. He limped home, vowing revenge. A few days later, he went out in the forest again looking for that brown bear, and finally found it drinking water at a stream. He picked up his rifle and shot it dead. Just then, he felt a tap on his shoulder, and turned around to face a huge grizzly bear. The bear told him "You've just killed a fellow bear. You know the drill, now bend over and take it like a man, or I eat you." The hunter didn't have a choice so he bent over. He dragged himself home, vowing revenge for this humiliation. A few weeks later, after he was able to walk again, the hunter went back into the woods looking for that bear. He searched for a long time, and finally found it. He picked up his rifle and shot it dead. Just then, he felt a tap on his shoulder, and turned around and came face to face with an enormous polar bear. The bear says "Face it, you don't exactly come here for the hunting, do you?"