The Big Bang Theory2007

Leonard Hofstadter:
No, I don't want any chocolate! Sheldon, you can't train my girlfriend like a lab rat.

Sheldon Cooper:
Actually, it turns out I can.

Leonard Hofstadter:
Well, you shouldn't.

Sheldon Cooper:
There's just no pleasing you, is there, Leonard? You weren't happy with my previous approach to dealing with her, so I decided to employ operant conditioning techniques, building on the work of Thorndike and B.F. Skinner. By this time next week, I believe I can have her jumping out of a pool, balancing a beach ball on her nose.

Leonard Hofstadter:
No, this has to stop now.

Sheldon Cooper:
I'm not suggesting we really make her jump out of a pool. I thought the "bazinga" was implied. I'm just tweaking her personality, sanding off the rough edges if you will.

Leonard Hofstadter:
No, you're not sanding Penny.

Sheldon Cooper:
Are you saying that I'm forbidden from applying a harmless, scientifically valid protocol that will make our lives better?

Leonard Hofstadter:
Yes, you're forbidden.

Sheldon Cooper:
[Squirts him] Bad Leonard.