[Dingle-Dingle]

One day, Beefy is speaking to his friend Bob and says to him "My elbow hurts like hell. I guess I better see a doctor, but its expensive."
Bob replies "Listen, you don't have to spend that kind of money, there's a diagnostic computer down at Tesco. Just give it a urine sample and the computer will tell you what's wrong. It even tells you what to do about it. It takes ten seconds and costs 50p.
So Beefy puts a urine sample in a small jar and takes it to Tesco. He deposits 50p and the computer lights up and asks for the urine sample.He pours the sample into the slot and waits.
Ten seconds later, the computer gives a printout: ....You have tennis elbow. Soak your arm in warm water and Epsom Salts ( Aisle 8), avoid heavy activity and It will improve in two weeks. Thank you for shopping @ Tesco.
That evening, while thinking how amazing this new technology was, Beefy begins wondering if the computer can be fooled. He mixes some tap water, a stool sample from his dog, a urine sample from his wife, and a sperm sample for good measure. He hurries back to Tesco, eager to check the results.
He deposits 50p, pours in his concoction, and awaits the results. The computer prints the following:
1. Your tap water is too hard. Get a water softener (Aisle 9).
2. Your dog has ringworm. Bathe him with anti-fungal shampoo (Aisle 7).
3. Your wife is pregnant. Twins. They aren't yours. Get a lawyer. See legal advice at the back of the store...
4. ... and if you don't stop playing with yourself, your tennis elbow will never get any better.
Thank You for shopping at Tesco.

DD