"Just because someone asks you nicely doesn't mean you should give it to him."

"I'm just trying to be helpful."

"Yeah, but do you know what he going to use it for?"

"No."

"Would you give him your social security number if he asked for it?"

"No. Of course I would give him my social security number."

"Would you give him mine if you knew it?"

"No."

"Well, just because you know something doesn't mean I should be telling others."