[flashback to Lily and Marshall talking to Robin at MacLaren's:]
Marshall: Okay, well, first of all... Eh. Second of all, there is a maneuver you can try. It's high-risk, but it's also high-reward. For lack of a better term, I'm going to call it... The Mosby.
Lily: [gasps]
Robin: The Mosby?
Lily: No, she couldn't Mosby him.
Marshall: She could Mosby the crap out of him.
Robin: What's the Mosby?
Marshall: Robin, you remember your first date with Ted? You wanted to hop on the T-train and take a ride downtown.
Robin: I was ready to jump that turnstile.
Marshall: What changed all that?
[flashback to Ted telling Robin he thinks he's in love with her]
Robin: Oh, The Mosby! That is genius. Thank you. And... excuse me, "eh?"
Marshall: Well, I mean, you're very pretty, but you're freakishly tall, and you don't believe in ghosts.