tu mijotes

what are you cooking up?

→ tu
phrase Rare #40,661
what are you cooking up? Informal and usually figurative: asks what someone is secretly planning or preparing, often playfully or suspiciously. The literal meaning of mijoter is “to simmer.”
FR: Tu mijotes quelque chose pour mon anniversaire ?
EN: Are you cooking something up for my birthday?

Tu mijotes quoi?

What are you cooking up?

— Infernal Affairs (2002)

Qu'est-ce que tu mijotes, petit diable?

What are you up to, you little rascal?

— Lagaan (2001)

Raconte à tes amis ce que tu mijotes.

Tell your friends what you’re cooking up.

Tu crois que j'vois pas c'que tu mijotes?

You think I don’t know what you’re up to?

— Le Hobbit : Un voyage inattendu (2012)

Qu'est-ce que tu mijotes?

What are you up to?

— L'Échine du diable (2001)