Ted: You picked the wrong guy!

Stella: Ted?

Ted: You picked the wrong guy. You made a really, really, really bad choice. What were you thinking? That guy? Are you kidding me? Have you learned nothing in the last eight years? You're just gonna regret this. You know that, right? You are going to regret this, and now there is nothing you can do about it because it's too late. All you can do now is go up there and start your crappy, disappointing life that will never be nearly as happy as the one you could have had with me. Good-bye.

Stella: Ted, wait.

Ted: Look, Stella, I am not here to win you back. I am here because I need to know that you know you made the biggest mistake of your life.

Stella: I know.

From that moment I wasn't angry anymore... Kids, you may think your only choices are to swallow your anger or throw it in someone's face, but there's a third option: You can just let it go, and only when you do that is it really gone and you can move forward. And that kids, was the perfect ending to a perfect love story. It just wasn't mine. Mine was still out there, waiting for me.

Leonard: Penny, if you promise not to chew the flesh off our bones while we sleep, you can stay.

Penny: Wh-what?

Sheldon: [glaring at Leonard] He's engaging in reductio ad absurdum.

Penny: [speechless]

Sheldon: It's the logical fallacy of extending someone's argument to ridiculous proportions and then criticizing the result. And I do not appreciate it.