Who likes this one?

A man hurts his elbow & goes to the dr. When the nurse takes him to the room, she hands him a cup & tells him that they need a urine sample. "A urine sample?" the man asks, "For what, I hurt my elbow?" The nurse replies, "We have a new machine that can diagnose anything by a urine sample." So, the man pees in the cup & hands it to the nurse. The dr comes in and tells him he has the worst case of tennis elbow he has ever seen, gives him some exercises & to come back in two weeks with another sample. So, the guy goes homes & thinks "I'm really gonna get this dr" so he pees in it, has his wife pee in it, his daughter, his dog, puts some crankcase oil from the car & j**** off & puts that in there. When he gets back to the dr, he hands it over & waits. The doc walks in a few minutes later & says, "Alright smartass, your wife's got VD, your daughter's pregnant, your dog's got rabies, your car's about to throw a rod and if you don't quit j***ing off that tennis elbow's never going to heal!"