A man wanders into a shop and asks the lady behind the counter for some dog food. “Do you have a dog?” she questions. “Yes,” replies the man. “Well where is he?” she requests. “He’s at home.” “Well I’m sorry,” says the saleswoman, “I can’t sell this dog food to you unless I see your dog. It’s store policy.”
Disgruntled, the man leaves, then returns the next day, this time for cat food. “Do you have a cat?” she asks. The man nods his head. “Well where is he?” the lady says. “He’s at home,” replies the man. “Well I’m sorry,” comes the response, “ but I can’t sell you this cat food unless I see your cat.”
So the man saunters off once again, only to return once again this time bringing a sack. “What’s in the sack?” Asks the lady. “Is it the cat?” “Put your hand inside and see for yourself,” suggests the man. “Hmmm, it’s warm and moist. What is it?” “I’d like to buy some toilet roll, please…”