Continuity mistake: At the start of the show, Frasier is looking at a brochure and he puts a hand on his knee as he says "Gore Vidal.", the next shot shows both hands on the brochure as he says ".he hates everything."
Continuity mistake: While Frasier, Roz, and Marty are at the table on the ship, Frasier is trying to write his speech. His pen switches from being in his hand to being on the table, several times, from shot to shot.
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 ★