Quote from Monica in The One Where Rachel Has a Baby (Part 1)
Monica: So we're gonna try? I mean, we're trying? Chandler: We're trying to get pregnant. [Chandler and Monica kiss] You know what, I'm not really comfortable doing this in front of the babies. So when do you want to start trying? Monica: All right, hold on a sec. Chandler: Period math? Monica: Yeah. Well, we could start trying now. Chandler: Right here? Monica: No, not here. Maybe here. Chandler: Wait a minute. It's perfect. We got a lot of time to kill and we're in a building that's full of beds. Monica: And it's so clean!