Jerry: [over intercom] Yes?
Voice: [intercom] Federal Express.
Jerry: Federal Express? Come on up. [to the guys] Federal Express? I'm not expecting a package.
Kramer: Woo, you know what you just did? You let a burglar into the building.
Jerry: You think so?
Kramer: Federal Express? Of course. It's the oldest trick in the book. You know it might not be a burglar. It might be a murderer.
Jerry: So you want us to abolish all home package deliveries?
Kramer: Yes. It's dangerous.