After having their 11th child, Zeb and Lula Mae, a backwoods couple, decided 11 was enough, as they could not afford a larger bed. So Zeb went to his veterinarian and told him that he and Lula Mae 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 but that it was expensive. A less costly alternative, said the doctor, was to go home, get himself a cherry bomb, light it, put it in an empty beer can, then hold the can up to his ear and count to 10.

Zeb said to the doctor, "I may not be the smartest man in the world, but I don't see how putting a cherry bomb in a beer can next to my ear is going to help me."

"Trust me. " said the doctor.

So Zeb 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 paused, placed the beer can between his legs, and resumed counting on his other hand...