Robin: No, Lily, this is serious. When that doctor told me I couldn't eat lobster and I did it anyway, it almost killed me. But here's the thing: I never wanted lobster again. So the solution is obvious. The only way to get Barney out of my system is to get him into my system, one last time. It's brilliant, right?
Lily: Not brilliant at all.
Robin: Thanks for being on board.
Lily: Not on board.
Robin: It means a lot.
Lily: Big mistake.