“Have you tried Viagra?” the doctor asked.

“Not a chance,” the old lady replied, “he doesn’t even take aspirin.”

“Not a problem,” the doctor replied, “just give him some Montana Viagra.”

“What’s Montana Viagra?”

“It’s simple. You discretely put the Viagra into his coffee when he’s not looking. He won’t be able to taste it. Try it out and get back to me in a week and tell me about the results.”

A week later, the old lady called the doctor.

“Oh my lord!” she wailed, “Terrible! Just terrible.”