As I am a superior being in every sense, our relationship is naturally out of balance. Because you are weak, and I am strong, I could do absolutely anything I desired in relation to you, if I was so inclined. If I wished, for instance...

[and here she just casually saunters over and puts her hand on shinji's bicep]

If I wished, I could snap you in half. Or force feed you fried tofu until your stomach burst. Or fuck you. Or fuck your boyfriend. Or your father, for that matter. Or sit here and make fun of you. And there's nothing you can do about it, see?

That's what the veto is for.