A grandpa walks into a grandson's apartment and sees a condom on the table.
"What's this!?" demands the grandfather.
"It's a condom," replies the grandson sheepishly.

"What do you use it for?" asks Gramps.

The grandson is surprised that his grandpa really doesn't know what a condom is,
and replies, "I use it to keep my cigarettes dry when I smoke in the rain."

To his surprise his grandpa says, "That's a great idea," and goes off to the drug store.
He asks the pharmacist for a condom.

"What size would you like?" asks the pharmacist.

"Oh, big enough to fit a camel."