"Smelly Cat" is a comedy song from the American sitcom Friends (1994–2004), performed by American actress Lisa Kudrow. Friends writers Adam Chase and Betsy Borns wrote it with musician Chrissie Hynde and Kudrow for the latter's character, Phoebe Buffay. It first appears in the sixth episode of the show's second season, "The One with the Baby on the Bus" (1995). Hynde guest stars in the episode as Stephanie Schiffer, a singer hired to replace Phoebe as Central Perk's in-house musician, to whom Phoebe eventually teaches "Smelly Cat".