Barney: Insane Duane?
Duane: Barney?
Future Robin: [v.o.] Insane Duane was your father's best friend, back in the days before he met me or your Uncle Ted.
[flashback to Barney and Duane at MacLaren's:]
Duane: We're going back to her place. Boom!
Barney: All right, you win! Here's 20 for picking up a girl with only one word. And here's another 20 for that word being "boner."
Duane: Thank you. I'll meet you back here in an hour when I'm done with, uh... Ah, who cares what her name is;
she won't be around long enough for it to matter.