This episode featured a new version of Barney's "suit up!" mantra from the pilot episode: "Flightsuit up!" He also later said "Penguin suit up!"

Barney: A girl dresses up like a witch, she's a slutty witch. If she's a cat, she's a slutty cat. If she's a nurse-
Lily: Wow, we get it
Barney: She's a slutty nurse

Lily: Guess what came in the mail today?
Marshall: Our costumes? Do they rule?
Lily: They rule. And yours is 100% wool so you won't get hypothermia like last year.
Marshall(deep voice): Tarzan nipple blue.

Marshall: I'm not gay! I have sex with my parrot all the time!

Barney: You are so pathetic! I came back for you. I penguin suit-ed up!

Girl at party: You sure are a sweet devil...
Barney: I'm also a horny devil!

It's the Slutty Pumpkin, Charlie Brown!
Ted waiting for the Slutty Pumpkin every Halloween despite the urgings of his friends is very similar to the Peanuts comic strip and animated specials, where Linus would wait in a pumpkin patch each Halloween waiting for the Great Pumpkin.

Also, when Ted spies the penguin who he thinks might be Slutty Pumpkin, the acapella group is humming the Peanuts tune "Linus and Lucy".

Top Gun: Barney dresses like and quotes Iceman from the Tom Cruise hit Top Gun. He also refer's to Ted as Mavrick and announces his entry by playing "Danger Zone" out in the hallway.

When Marshall comes out dressed as a pirate, the costume is similar to Captain Jack Sparrow from the hit movie, "Pirates of the Carribean: The Curse of the Black Pearl."

This episode featured a new version of Barney's "suit up!" mantra from the pilot episode: "Flightsuit up!" He also later said "Penguin suit up!"