[flashback to Lily being awoken in the night by a klaxon:]
Lily: Marshall, what is that?
Marshall: I rigged this alarm to go off every three hours. I'm training myself for the sporadic sleep patterns of early parenthood. Now if you'll excuse me, I have a practice baby to soothe.
[present:]
Ted: You got to talk to him.
Lily: Yeah, I'll talk to him tonight. Maybe tomorrow morning.
Ted: One last swaddle?
Lily: It's just so cozy. It's like sleeping in a warm burrito.