Barney: Intervention banner? What's that for?
Ted: Stella.
Barney: Ah. [takes a letter out of his suit pocket] "Ted, I cannot stand idly by..."
Ted: You've just been carrying that around?
Barney: Please, Ted? "I cannot stand idly by while you make the biggest mistake any man can make... getting married. Mark my words, this whole thing is gonna go up in flames!" [Barney sets the letter on fire and throws it in the air, where it vanishes] Damn! I put the flame cue too early. I had so many more important things to say, and... The point is, Ted, marriage is stupid. Every year, there are a million new hot 22-year-olds walking into bars, and call me "glass half full," but I think they're getting dumber.