So, these two old ladies escape the supervision of their retirement home every so often and go grab a smoke somewhere off the grounds.
One day, they're out there, puffing away, when it starts to rain. Gladys whips out a little plastic cover for her cigarette. She cuts the end off of a tube and rolls it over her cigarette and keeps on puffing away.
Muriel is amazed. "What is that? A cigarette rain cover? That's ingenious. I've never seen such a thing?"
"It's called a condom," Gladys explains. "You can get them at any drug store."
A few days later, Muriel is downtown on some errands and makes her way to a drugstore. She asks the young woman at the counter for a condom. The pharmacists up in the pharmacy hear this and stand up to peer over the top of the pharmacy wall, looking down to see this tiny, wizened, 83 year old woman standing at the counter. They're confused.
The clerk was taking it in stride, though. "Certainly, ma'am. How many do you want?"
Muriel isn't sure if you can reuse them, so she says, "Well, I go through about a pack a week." One of the pharmacists had to sit down, his mind reeling with the images flowing through it.
The clerk nodded. "Alright, what size would you like?"
"Oh, I don't really care," Muriel replies. "It just needs to fit over a Camel."
There was a thud as the other pharmacist fainted.