12 Celebrities Who “I Don’t Know Her”-ed Other Celebrities

In the early 2000s, Mariah Carey sparked a movement when she deflected a question about Jennifer Lopez by uttering the phrase: “I don’t know her.” And thus, a meme was born. Since Carey’s iconic interview, the four-word phrase has become a colloquial saying, used when people—typically, celebrities—claim to not know who someone is.

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While, in some cases, the celebrities truly do not know who someone is, the saying is typically used as a form of shade. (In an interview with Wendy Williams, J-Lo called Carey “forgetful,” claiming that the two have met “many times”—so clearly, “I don’t know her” isn’t a phrase that should be thrown around lightly.) From Justin Bieber to Barack Obama, here are 10 celebrities who “I don’t know her”-ed their fellow stars.