Marshall: All pregnant ladies have crazy sex dreams. It's just her hormones going berserk.
Barney: So who's responsible for her rapid thigh movement this time?
Ted: Oh, my favorite was when she banged George Washington.
Barney: I liked the three-way with Bill Cosby and Papa Smurf.
Ted: Oh, he smurfed the smurf out of her.
Marshall: Yes, while The Cos smurfed off in the corner. We all remember. But here's the thing. When Lily has dirty dreams about other people, she always tells me. But this time...
[flashback:]
Marshall: Sounds like you had a crazy dream. What was it about?
Marshall: [v.o.] And then her face turned... vermilion.
Lily: Just... you and me... gettin' it on, monogamously. Monoga-me-oh-my.