Joke: Friendly Pig-Fool joke

A man was on a walking holiday in Ireland. He became thirsty so decided to ask at a stranger's home for something to drink. The lady of the house invited him in and served him a bowl of soup by the fire. 

There was a wee pig running around the kitchen, running up to the visitor and giving him a great deal of attention. The visitor commented that he had never seen a pig this friendly. 

The housewife replied: "Ummm, he's not that friendly. That's his bowl you're using."