The Devil and Dr. Phil - S10-E21
Continuity mistake: When Bebe is talking to Frasier, she is eating a piece of celery. The piece changes size between shots, most noticeably at the very end of the conversation when it suddenly goes from large to tiny.
Answer: Nanny G (Nanette Guzman - played by Laurie Metcaf) has been a children's entertainer for twenty years, and tells Frasier, "Do you know what it's like to play the same character for 20 years?!" The joke is that Kelsey Grammer has been playing Frasier Crane since 1984, when the character first appeared on "Cheers", so Kelsey in real life has been doing just that!
Super Grover ★