After having their 11th child, a Texas couple decided that was enough (they could not afford a larger double wide). So, the husband went to his doctor (who also treated mules) and told him that he and his wife/cousin didn't want to have any more children. The doctor told him that there was a procedure called a vasectomy that could fix the problem. The doctor instructed him to go home, get a cherry bomb (fireworks are legal in Texas), light it, put it in a beer can, then hold the can up to his ear and count to 10.
The Texan said to the doctor, "I might not be the smartest guy in the world, but I don't see how puttin' a cherry bomb in a beer can next to my ear is gonna help me."
So, the couple drove to Georgia to get a second opinion. The Georgia physician was just about to tell them about the procedure for a vasectomy when he noticed that they were from Texas. This doctor instead told the man to go home and get a cherry bomb, light it, place it in a beer can, hold it to his ear and count to 10.
Figuring that two, learned physicians couldn't be wrong, the man went home, lit a cherry bomb and put it in a beer can. He held the can up to his ear and began to count. "1, 2, 3, 4, 5 . . .", at which point he stopped, placed the beer can between his legs and resumed counting on his other hand.
(This medical procedure also works in Tennessee, West Virginia, Kentucky and Arkansas.)