tu dérailles

you're losing it

→ tu
phrase Rare #39,705
you're losing it Informal. Used to say someone is talking or acting in a crazy, unreasonable, or shocking way.
FR: Arrête, tu dérailles complètement !
EN: Stop, you're totally losing it!

Tu dérailles?

Are you going off the rails?

— Les Affranchis (1990)

Tu dérailles, Dane a pas tué Jackie, putain!

You're delusional, Dane didn't kill Jackie, for fuck's sake!

— The Rip (2026)

Stu, tu dérailles, mon pote.

Stu, you're going off the rails, my friend.

— En terrain miné (2014)

Tu dérailles.

You're going off the rails.

— Mystic River (2003)

Tu dérailles!

You're going off the rails!

— Infernal Affairs (2002)