[flashback to Barney and Nora at dinner:]
Barney: I mean, I like being single, but secretly, I want to have kids.
Nora: How many do you want?
Barney: Three. One of each. You?
Nora: Three. All in an old stone house.
Barney: Yeah, with ivy growing on it.
Nora: Cocktails on the patio.
Barney: And we must have a pool.
Nora: We? ... A pool sounds brilliant. Are you for real, Barney?
Barney: I really am.
[later, at MacLaren's:]
Robin: Unbelievable.
Nora: I know, right? And the second reason we popped in is 'cause I need to use the loo. But when I get back, I'm dying to hear all about Mr. Softy here.
Barney: I assure you, that's not a nickname that I... [Lily punches Barney in the chest]
[present:]
Dr. Kirby: And that explains your 14-second cardiac arrest.