Teen Titans, Season 2

Robin:
Cyborg! What happened back there?

Cyborg:
Get off my back.

Robin:
I'm on your side, remember? I was just trying to get you to kick it up a notch.

Cyborg:
I don't have another notch! I'm not like you, okay? When I say I can't, I can't!

[Keeps walking then stops.]

Cyborg:
[sighs] When I was an athlete, when I was human, I loved pushing my limits. Getting stronger, faster, better, just by trying harder than I ever had before. My coaches would always tell me to give a hundred and ten percent. And I always did.

Robin:
You still can.

Cyborg:
My muscles are mechanical now. Limits are built in. No matter how hard I try, a hundred percent is all I've got.

Robin:
I didn't know.

Cyborg:
Well, now you do.