"Doctor, I need an operation," said an old lady to a doctor.
"What's wrong?" The doctor asked.

"Nothing. I just need an operation."
"You are not sick but you want an operation? Where should I perform it?"

"It doesn't matter. Just go ahead and do it."
"But why?"

"I am a member of the Senior Citizens Association. All our members have had surgery. And they talk about it every day. I have never had surgery and cannot join in the conversation!"