[user5994461]

Ouai instead of oui, is like yeah instead of yes. Putain is an interjection of surprise or anger, like when you leave your flat with the door closing behind you only to realize the keys are left inside, that's when you scream putain (fuck). These are not inverse words.

Long story short, most of everything else discussed in this thread is not appropriate. If you address women as meuf (hoe), your friendship and romantic prospects will dwindle like an ice cream under the sun.

If that's how you talk in an interview or on a date, you're out in less than 5 minutes (they may wait the end of hour to show you the door, they are not monster -unlike you-).