Ke$ha does it. So does Britney Spears, Zooey Deschanel and Kim Kardashian.

And now a report shows two-thirds of women in a recent study do it, too: They're all using vocal fry when they talk.

Vocal fry is a creaky, deep sound made when the human voice is at the lowest register. For Ke$ha and Britney, the creak of vocal fry can be heard at the end of the verse lines in their songs. For Zooey and Kim, it’s at the end of their sentences. Listen here for some examples:

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