Bob was excited about his new rifle, and decided to try bear hunting. He spotted a small brown bear and shot it.
There was then a tap on his shoulder, and he turned around to see a big black bear.
The black bear said, "That was my cousin, and you have got two choices. Either I maul you to death or we have sex." After considering briefly Bob decided to accede to the latter alternative.
Even though he felt sore for two weeks, Bob soon recovered and vowed revenge. He headed out on another trip where he found the black bear and shot it. There was another tap on his shoulder. This time a huge grizzly bear stood right next to him. The grizzly said, "That was a huge mistake, Bob. That was my cousin and you have got two choices. Either I maul you to death or we have rough sex."
Again, Bob thought it was better to cooperate.
Although he survived it would take several months before Bob finally recovered. Outraged he headed back to the woods and he managed to track down the grizzly and shot it. He felt sweet revenge, but then there was a tap on his shoulder. He turned around to find a giant polar bear standing there.
The polar bear said, "Admit it Bob, you don't come here for the hunting, do you?"