you must be mad
vous êtes le / un téléchargeur fou means you are the / a crazy downloader in French.
vous êtes fou/folle
You (formal) were hot/angry. I think.
- vous êtes fou (formal you, singular) = you are mad / crazy; - vous êtes fous (you plural) = you (all) are mad; - Ils sont fous (plural - not possible in the singular) = they're mad; fou-fou (where you double the word) is milder than 'fou'. It is a familiar word employed for for instance to an excited (in an often positive way) child.
I'm mad about you (said by a man)
It is "tout le monde est fou sauf moi et vous" - and it is a very literal translation of "Everyone (all the world) is crazy except me and you."
fou is the masculine adjective for 'mad, crazy'. The feminine is 'folle'.
il est trop fou
tu es fou / folle, vous êtes fou(s) / folle(s) (you formal or plural)
Je suis fou de vous
Puy du Fou's motto is 'Préparez-vous à voyager dans le temps'.
I am crazy for your love I'm so happy that I have you