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The laboratory analyzer
Joe went to see his doctor one day because his elbow was hurting. The doctor asked him to provide a urine sample.
"Why should I give a urine sample doctor?" asked Joe. "It's my elbow."
"I have a new laboratory analyzer that can diagnose any ailment just with a urine sample" answered the doctor. With that, he took the urine sample. Ten minutes later, the doctor returned and said, "You have got tennis elbow. You need to rest it."
Joe went home and got an idea. He got his wife to pee in a sample bottle. Then his daughter peed in it. So did his son. Then he got the dog to pee in it.Then he put some drops of oil in it from his car. Finally Joe masturbated and ejaculated in to the bottle. The next day, Joe took the bottle back to the doctor and asked if his machine could diagnose what was wrong.
Half an hour later the doctor returned with the results.
"Ok wise guy", said the doctor.
"Your wife has VD, your daughter is pregnant, your son is gay, your dog has mange, your car is going to blow a gasket, and if you don't stop masturbating, your elbow won't get better."
