Two very elderly men

Two very elderly men were having a conversation about make love.

Elmer says, “Yes sir, I did it three times last night with a 30-year-old!”

Leon replies, “You’re kidding! I can’t even manage to do it once! What’s your secret?”

To which Elmer said, “Well, the secret is to eat lots of whole-wheat bread. I’m not kidding!”

So the second old man rushed to the store.

The clerk asks the old man,

“May I help you?’

“Yes, I’d like four loaves of whole-wheat bread, please,” said Leon.

“That’s a lot of bread! It’s sure to get hard before you’re done!” the clerk remarked.

Leon replies,

“Damn! Does everyone know about this except me?”