French phrase
Je vais en prendre ~, au cas où.
Meaning
I'll take a few ___, just in case.
When to use it
It expresses preparing extra items as a precaution. The phrase is casual and useful in everyday situations.
Example dialogue
On va faire une randonnée demain, tu prends de l'eau ?
We're going hiking tomorrow, are you taking any water?
Je vais en prendre quelques bouteilles, au cas où.
I'll take a few bottles, just in case.