Redneck vasectomy

A redneck wants to get a vasectomy and goes to the doctor. The doctor says "ah, it's really easy, put a lit cherry bomb in a beer can and count to ten".

The redneck is confused, but since the doctor told him, he decides to try it. He takes the cherry bomb, lights it, puts it in the can and counts to five, at which point he puts the can between his legs and resumes counting with the other hand.