The Big Bang Theory - Episode 5.19 - "The Weekend Vortex"

Original Air Date: March 8, 2012

When the guys plan a gaming weekend to celebrate the release of a new Star Wars videogame, Sheldon finds himself in the unfortunate position of being committed to a weekend with his girlfriend, attending one of her aunt's 93rd birthday party. When Amy rhetorically offers that Sheldon should game for the weekend if that's what he wants to do, he takes her up on it. Penny then offers Amy some advice on how to deal with a boyfriend who makes the wrong decision within a relationship.

California Science Center - When Sheldon is attempting to convince Penny to pressure Amy into letting him out of attending the birthday party, he offers her a booklet of "Cooper Coupons." One of these is for a day trip to the California Science Center where he points out all of their mistakes.

Amy: ... I followed all the protocols set forth by you in the relationship agreement. I made a written record request 72 hours in advance. I checked the tyre pressure on the car. I even contacted the Centers For Disease Control to find out what shots they recommend for travel to Orange County. FYI, it’s none.
Sheldon: Amy, the relationship agreement was not designed for either one of us to get our way.
Amy: You use it to get your way.
Sheldon: I use it to get the right way. The fact that the right way is also my way is a happy coincidence.

Howard: Look, if you don’t want to go to the party, just don’t go. You’re a grown man. Act like one. Tell Amy you want to spend the weekend having a sleepover and playing video games with your friends.

Sheldon: These are Cooper Coupons. These are for various things I can do for you. Um, oh, this one is for one free grammar check. Uh, you could use it for emails, letters, tattoos, what have you. Um, oh, this is fun one. This is an afternoon with me at the California Science Center, where I point out their mistakes.

Sheldon: I think I understand. You’re the one person who can say Sheldon Cooper is your boyfriend, but that rings hollow if you can’t lord him over others in the flesh. I forget what I bring to the party and what I take away when I leave. Please accept these valuable Cooper Coupons as restitution.
Penny: Sheldon, she doesn’t want your stupid…
Amy: Ooh, Science Center. Redeeming. Let’s go.
Sheldon: Well played, Amy Farrah Fowler. Let me get my coat. (Whip sound) Oh, grow up, Leonard.
Raj: But e-excuse me, I have something to say. None of you may realize it, but I was very much looking forward to this weekend. It was gonna be like the old days, the four of us hanging out playing video games before you guys all got girlfriends. Do you have any idea what it’s like to be the only one without a girlfriend? Even if I get one someday, I’ll still be the guy who got a girl after Sheldon Cooper!