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by devilsbabe 2322 days ago
It's rude in the same context that "yeah" is rude. So ok, there are times when it's more appropriate to answer with "yes", but there are many situations outside of chatting with my friends where I would be comfortable saying "ouais".

Also, verlan is used all the time by everyone under the age of 30. Not all of it; some terms are rarer than others and are, as you say, associated with rough neighborhoods. But it's an extremely common way of speaking.