Ted: This is unacceptable. I'm sorry, we're gonna have to find a new doctor. Guys, for the health of our baby...
Marshall: Our?
Ted: We have to get serious about what Lily is putting in her body. Speaking of which, when we deliver, we won't be using any drugs.
Lily: [demonic voice] Get out!
Ted: Why are you kicking me out?!
Lily: Because you're always intruding on our intimate moments! This is like college all over again!
[flashback to Ted ignoring the sock on the door as he enters his dorm room:]
Ted: Man, you guys sure are messy! There's clothes everywhere. There's even a sock on the door!
[back:]
Lily: A sock on the door is a universal code for "We need some space." We needed it back then, and we need it now.
Ted: Come on! We're a trio! We've always been a trio! We're right up there with Batman and Robin and Alfred.
Lily: Out!
Ted: Romeo and Juliet and the Apothecary.
Lily: Now!
Ted: Salt and Pepper and Cumin!