Different story:

Two friends were deer hunting, when one had to move his bowels.

So he squatted over a stump and was bitten on the penis by a rattlesnake.

He yelled to his friend, "I've been bitten on the penis by a rattlesnake and I'm going to die."

To which his friend replied, "No, I'll go to town and get help, you're going to live."

Immediately the friend jump into his jeep, drove at break neck speed, endangering his life more than once, and reached the doctor's office. Whereupon the Dr. said, " I have to deliver a baby, you'll have to tend the wound. Just cut two incisions over the wound and suck the poison out."

The friend jumped back in his jeep, made the same harrowing drive, reached his friend and said, "Yep, you're gonna die."