Join for a drink

Judi spotted Jon across a crowded room at a convention in Las Vegas. Easing up next to him, Judi asked Jon if he would like to join her for a drink.

"I don't know," said Jon. "I've got a wife and two kids at home..."

To which Judi replied, "I don't know you. You don't know me. They don't know us, and we don't know them."Jon thought about it for a second and then agreed.

A few drinks later, Judi invited Jon up to her room for a nightcap. When Jon hesitated again, she said, "I don't know you. You don't know me. They don't know us, and we don't know them." And Jon agreed.

After a few more drinks in Judi's room, the two of them were starting to get pretty friendly, and Judi asked if Jon would be interested in a little party.

Jon, bewildered, exclaimed, "If I don't know you, you don't know me, they don't know us, and we don't know them, then who the hell are we going to invite?!"