Ethel approached Albert in the nursing home one day and asked him take her to the cinema. "Nah, what do I want to go to the cinema for?" says Albert. "Oh go on", says Ethel, "there's a really good film showing." "No thanks" Albert replies. "Look", says Ethel, "if you take me to the cinema, I promise I'll hold your todger all the way through the film." "Oh, alright then", says Albert and they go to the cinema that night.

Two weeks later Ethel asks Albert to take her to see another film. "No thanks", says Albert, "I'm going with Mary instead."

"You're going with Mary!" exclaims Ethel, "Why, what has she got that I haven't?"

"Parkinsons", replies Albert.