Stumped.

[I eat vegetarians.]

A bloke is driving passed a farm when he sees a pig with an artificial leg. Not quite sure what he is seeing, he decides to stop and ask.
He goes up to the farmer and says, "I was just driving by and saw that pig has an artificial leg and i just had to find out why."
"Well," the farmer answers, " that there is one real special pig. The house was on fire one night and that pig saved all of us from a certain horrible death."
"But why does he have an artificial leg?" asks the man.
The farmer, his face now screwed up, looks at the bloke and says "well a hero pig like that you wouldn't eat all at once!"