One day a farmer came into town and in the back of his truck he had a three legged pig.  The local towns' people became very interested in the pig because, other than a missing leg, he was quite a fine animal.  One man asked, " Hey farmer, How'd that pig lose his leg?"

The farmer replied, "Well, one day I was out in the field and I fell off my tractor.  Just as I was about to be sucked into the combine, the pig appeared out of nowhere and saved me."

"Oh, So that's how he lost his leg."  said the man. 

"No" replied the farmer.  "Another time I was hunting and a bear attacked me.  This here pig fought off that bear!"

"Oh, so he lost his leg to the bear?"  asked the man.

"No, no." said the farmer.  "There was a fire and all of the animals were ready to burn up but, once again the pig sprang into action.  I don't know how he did it but he saved every one of the animals in the barn!"

"Ok, so the pig lost his leg in the fire, right?" asked the man.

"No, that's not how how he lost it."  replied the farmer.

Very frustrated the man finally said, "Farmer, How the hell did the pig lose his leg?!"

The farmer replied, "Well with a pig this good, you don't want to eat him all at once!"