Two friends bump into each other unexpectedly in the street — 'eh reuf ! je savais pas que tu habitais par ici !'

Verlan of 'frère' (brother), used both literally for a sibling and In practice for a close male friend — exactly parallel to 'bro' in English. It's part of the same Verlan family vocabulary system as reum and reup, giving young people a private shorthand for their whole household. The figurative sense has largely overtaken the literal one in everyday speech.

"Reuf" does not mean a referee, a rooftop, a refund. It specifically means "A brother".

You're at a café with friends, but you pack up your laptop because you have an exam tomorrow morning.

Literally "It's time to strike the books."
In practice it means it's time to start studying seriously, often with the vibe of buckling down and focusing. It's commonly used by students, but adults will also say it when they need to learn something fast for a test, certification, or work training. The "hit" here is like "get to" or "jump into," not actual violence. You'll often hear it when someone is choosing responsibility over fun, like leaving a hangout early to study.

"It's time to hit the books" does not mean it's party time!, i will note this down to remember, it's time to tidy up. It specifically means "It's time to study".