"I penguin-suited up to show you the error of your ways."

Barney: "I can't believe you talked me into this."
Ted: "I didn't, you followed me up here."

"Your ego's writing checks your body can't cash."

Robin: "How do you do this, Ted? How do you sit out here all night, on the roof in the cold and still have faith your pumpkin's gonna show up?"
Ted: "Well, I'm pretty drunk..."

Ted: [sees Barney in a new devil costume] "Barney? What, you're back?"
Barney: "That's right."
Ted Mosby: "In a totally new costume!?"
Barney: "Every Halloween I bring a spare costume. In case I strike out with the hottest girl at the party. That way I have a second chance to make a first impression."