A female TV reporter was interviewing with a farmer, seeking the main cause of Mad Cow Disease.

"Good evening, sir", she began. "I am here to collect information on the possible source of Mad Cow Disease. Can you offer any reason for this disease?"

"Do you know that a bull mounts a cow only once a year?" the farmer asked.

Obviously embarrassed, the reporter said, "Well, sir, that's a new piece of information, but what's the relation between this phenomenon and Mad Cow Disease?"

"And," continued the farmer, "do you know that we milk a cow twice a day?"

"Sir, this is really valuable information," said the lady reporter, "but what about getting to the point?"

"I am getting to the point, young lady," the farmer insisted. "Just imagine, if I was playing with your tits twice a day and only screwing you once a year, wouldn't you get mad?"