Tommy: No, that's not how it happens. It's caused by sex.
Dick: Lieutenant, you are the security officer. If you got pregnant, it would seriously jeopardize our mission.
Sally: You never said anything before.
Dick: Well, you weren't getting the regular nookie before.
Tommy: Sally, getting pregnant goes against protocol.
Dick: Yeah, and it's an endless responsibility.
Harry: It'll make your feet swell up.
Sally: God, you guys are right. I can't get pregnant. I just got new shoes.