[flashback:]
Woman: It's this monastery in Connecticut, out in the woods and the nuns there, they make this gourmet cheese. It's just amazing.
Barney: [imitates dolphin]
Woman: Wow, was that three glasses of wine? Where does the time go?
Barney: [imitates dolphin]
Woman: Look, I know you need to get back to your studies.
Barney: [imitates dolphin]
Woman: Maybe we could get together some other time?
Barney: [imitates dolphin and hands the woman his phone]
[later:]
Robin: No. Not possible.
Barney: It was the performance of a lifetime. Man, if I'd have hung around a few more minutes, I probably could've gotten her to touch my blowhole.