Spanish phrase
Me lo pienso.
Meaning
I'll think it over.
When to use it
Signals intent to think something over before deciding. Polite response to offers or invites that keeps options open and promises a follow-up.
Example dialogue
¿Quieres venir al cine mañana por la noche?
Do you want to come to the movies tomorrow night?
Me lo pienso, te confirmo mañana.
I'll think it over; I'll confirm tomorrow.