Barney: Not good, Robin. Very not good. How do you keep winning, anyway?
Robin: Well, to the keen observer, all of you Stinsons have the same very subtle tell. Whenever you're bluffing, you say the word "bluff."
[flashback:]
James: Hey, I'm hungry, should we get some bluffalo wings? Raise you 20.
Loretta: When I walked in, I saw an all-you-can-eat bluffet. Raise 50.
Barney: Mm. I could use a bluffberry muffin. A blueberry bluffin. Sorry. A bluebluffy muffbluff. All in.