Lady Gaga is taking “Smelly Cat” for a spin.

In the new “Friends: The Reunion” special, the singer makes a surprise appearance, joining Lisa Kudrow on the couch at Central Perk to sing a rendition of her character Phoebe’s iconic song.

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Gaga puts all her vocal skills into singing the comedic song, featuring the classic lines, “Smelly cat, smelly cat, what are they feeding you?/Smelly Cat, smelly cat, it’s not your fault!”

The two then perform the song as a duet, trading lines before singing together on the chorus, only to be joined in by a choir of background singers.

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On Twitter, fans were absolutely delighted by the duet.