This paper investigates how, in Marseille, speakers of a supposedly dominant group can end up being minoritized in a local linguistic market in which the rules of the linguistic games are different than the ones at the national level. The way some people of Marseille make fun of the Parisian way of speaking illustrates how they want to reverse the sociolinguistic balance of power. For some time, the traditional Parisian/Marseillais opposition has been undergoing a reconfiguration, due to the visible and audible arrival of newcomers with different socioeconomic and sociolinguistic profiles. The study of contact between people from Marseille and newcomers allows us to analyze the (explicit or implicit) minorization processes, which is sometimes filtered by humour, when it is focused on linguistic identity.