Want to impress with your French? Use idioms. Even if you sometimes have to forget the literal meaning.

Do you want someone to stop bragging? Then say: arrête de te la péter!

Literally: Stop blowing yourself up.
The meaning in French: Stop bragging.

Are you annoyed by someone? Then you can say: faire chier quelqu’un.

Literally: To poop on someone.
The meaning in French: A vulgar expression for making someone angry or annoying them.

A cute raccoon is called a raton laveur in French.

Literally: Washing rat.
The meaning in French: Raccoon.