que no se te

so you don't …

→ que
phrase Uncommon #22,546
so you don't … Often used to express a reminder or wish that something not happen to you. With olvidarse, it means “don’t forget to …”.
SP: Que no se te olvide comprar leche.
EN: Don't forget to buy milk.

Que no se te pegue la salsa.

Don't let the sauce stick to you.

— Buenos Muchachos (1990)

Que no se te caiga esa taza.

Don't drop that cup.

Un cinturón ayuda a que no se te bajen los pantalones.

A belt helps keep your pants from falling down.

Habla en español, chico, que no se te entiende.

Speak Spanish, kid. No one can understand you.

— Bajocero (2021)

Y que no se te note en la cara que nos entiendes.

And don't let it show on your face that you understand us.

— Volver (2006)