My wife went into the butchers and said: "You've a sheep's head in your window." The butcher said: "That's a mirror."
There were two Irishmen eating sandwiches in a pub and the landlord said: "You can't eat your own food in here." So they swapped sandwiches.
I went to an old people's home. I asked an old lady with a Zimmer frame. "Do you know who I am?" She replied, "Ask the Matron, she'll tell you."