Sheldon: There's something I need to tell you. Wow, you look amazing! That's not what I need to tell you. But you do!
Amy: What's wrong?
Sheldon: Something incredible just happened. Remember when you were telling me about my bow tie and how a little asymmetry is good?
Amy: Yeah?
Sheldon: My equations have been trying to describe an imperfect world, and the only way to do that is to introduce imperfection into the underlying theory.
Amy: So, instead of super symmetry, it would be super asymmetry?
Sheldon: (gasps) Super asymmetry. That's it! Give me your lipstick.
Amy: What?
Sheldon: Just give it to me, you beautiful thing! We have work to do!