you don't do it
Si tu ne le fais pas, je le ferais.
If you don't do it, I will.
And if you don't do it?
No, you don't.
Je pense que tu ne le fais pas comme il faut.
I think you're not doing it properly.
You don't do it.
Si tu ne le fais pas, je le ferai.
If you don't do it, I will.
Si tu ne le fais pas je ne sais pas ce que je ferai.
If you don't do it, I don't know what I'll do.
— Picnic (1955)