Actually very polite french for "Would you like to sleep with me tonight".
Makes an awkward pickup line when asked to a french girl as it's way too formal and more sort of written french.
Ask "tu aurais envie de faire l'amour ce soir?" instead.
You: (with a drunk American's accent) "Hi Babe, voulez-vous coucher avec moi ce soir?"
She: (Pissed off, in french) "va te faire enculer espece de gros tas de merde, j'en ai ras-le cul de vos conneries, merde!!! je rentre!!!" (not meaning you should follow her to her place)