Marshall: Lily, I love you. [grabs cockamouse and run towards window] Robin, open the window! [throws cockamouse out the window]
Robin: It can fly.
Lily, Marshall: Wow.
Marshall: Be free, mutant beast. I'll miss this private war of ours. I grew to admire your tenacious...Oh my God, it's headed this way

Lily: Holy crap. We got it! What do we do with it?
Marshall: Calm down, I have a plan. I told my friend, Sudeep, about it. He wants to show it to the Columbia biology department. But it has to be alive.
Lily: Wait, no, no. They'll do lab experiments on it. That's so mean. Shouldn't we just beat it to death with a bat?

Marshall: Yeah, look around. The universe is mysterious and awesome. You got the Bermuda triangle, ghosts, Big Foot.
Robin: Bad maps. Creaky houses. Hillbilly in a gorilla suit.
Marshall: Aliens? [Robin shakes her head] Oh, come one, you gotta give me aliens. Stonehenge. Area 51. There's alien crap all over the place.
Robin: You can't be serious.
Marshall: My friend, you just poked the bear

Marshall: For as much as we know about the cockamousse, there are still so much we don't know.
Robin: Well, we know that there's no such thing as a cockamouse. What we don't know is what you guys have been smoking

Lily: He's a whole new species. The cockamouse.
Marshall: And it's the size of a potato.
Robin: So, what, now it's a cockapotatomouse?
Marshall: Don't make it sound ridiculous. It's a cockamouse

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 [in deep voice]: Tarzan nipple blue

Ted: I just met the perfect woman. She's funny, she's beautiful, she loves "Star Wars"...
Marshall: Woah woah woah, what's her take on Ewoks?
Ted: Loves them!
Marshall: Oh, good. I don't know why people are so cynical about Ewoks; the Rebellion would have failed without the Ewoks.
Ted: And get this: She's a marine biologist, she spent a year in Antarctica studying penguins.
Marshall: Oh, penguins are cool. Kinda like black-and-white Ewoks. I approve

Marshall: Apple tart, excellent choice, Lilypad.
Lily: Thanks, Marshmallow.
Robin [to Mike]: Well, let's dig in, Mi... Mi... Microwave Oven

Lily: We are so gonna win the costume contest this year.
Marshall: First prize, $50 gift certificate at the bar.
Ted: And how much did you pay for your costumes?
Marshall: $100
Lily: Each

Robin: He's not my boyfriend. He's just this guy I've been seeing for a couple of weeks.
Lily: Boyfriend.
Marshall: So why haven't we met him?
Robin: We're not really ready to go public yet.
Barney: Married

Lily: Maybe we should start doing grown-up stuff.
Marshall: It was some pretty grown up stuff we did this morning.
Lily: Yea, but it wasn't classy

Ted: What are you doing here, Lily let you go?
Marshall: Lily? Psshh, who cares, right?
Ted: You are so dead.
Marshall: Oh, I'm so dead