Mariah Carey may have had technical and vocal difficulties during the first stop of her The Elusive Chanteuse tour in Japan, but at least one message came through loud and clear—and it was directed at her estranged husband Nick Cannon!

While performing in Japan on Saturday night, Mimi performed a cover of Billie Holiday’s hit “Don’t Explain.” While belting out the tune—which was written after Billie’s husband, Jimmy Monroe, came home with lipstick on his collar—Mariah ad-libbed the line, “I know you cheated mother f–cker!”

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She can be heard saying the NSFW line around the 4-minute, 30-second mark.

What do you think of Mariah’s candid declaration?

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