Leonard: So, where do you want to hang it?
Penny: Are you kidding? We're not hanging it.
Leonard: But it's an expression of our love.
Penny: And our butts. Not hanging it.

Raj: Thank you for forgiving me.
Emily: It's okay. At some point we were bound to have our first fight.
Raj: Well, it almost happened when you called my Apple Pie crust doughy. But the truth is, you were right and I was just angry at myself.

Amy: I guess we'll have to make a new video together as a couple.
Sheldon: Good idea. And as you've had such a rough day, I'm gonna let you throw the pie in Leonard's face.

Amy: Think about it. If we had a family there, our kids would be martians.
Sheldon: They would, wouldn't they? We could give them cool martian names. We could teach them about martian history, like who planted those flags or where'd that copy of Mars Attacks come from.

Amy: We could also be the first people to procreate on Mars.
Sheldon: You just can't keep it in your space pants, can you?

Amy: I suppose being the first people on a new planet would be incredibly exciting.
Sheldon: I know. We could be the first to plant a flag on Mars.
We could be the first to watch Mars Attacks on Mars.
We could be the first to say "Good lord, what on Mars are you talking about?"

Amy: Are you asking me to go to Mars with you?
Sheldon: I am. If I'm going to a barren, lifeless environment, where the chances of survival are slim to none, I want you there with me.

Amy: What I want is for us to be planning our future together.
Sheldon: And in that future, are we on the same planet? Because I've seen people make the long distance thing work.
Amy: We're on the same planet!

Leonard: It seems a shame to throw it away.
Penny: Yeah. We could give it to Sheldon and tell him William Shatner painted it.
Leonard: God, I love you. I love you so much.

Leonard: I mean I was on fire. I was in the zone like an athlete.
Penny: Sweetie, I beat you at this, too.

Sheldon: This again. Amy, I've already had one new hole torn in my body today, I don't need another one.

Amy: And who says you could even survive an inter-planetary mission anyway? You could barely survive a tiny turtle bite.
Sheldon: First of all, this has only made me stronger.

Sheldon: So you're saying you wouldn't leave me for the chance to be one of the first humans to colonize another planet?
Amy: I would at least mention it before filling out the application.
Sheldon: Hmm. That's exactly what Leonard, Wolowitz, Koothrappali, Bernadette and Penny said.

Leonard: Please go to Mars.

Sheldon: I can't believe you almost had me bring a wild animal into my home.
Amy: No one told you to poke the turtle's face.
Sheldon: I was playing "Got your nose". That's how you get children to like you.