"Mother Load (part I)" is the twelfth episode in season 9 of American sitcom Frasier.
Niles asks Daphne to move in with him, and she eagerly accepts, but when she receives a phonecall from her mother announcing an impending visit, she asks that the move be postponed. When Gertrude Moon arrives, Niles discovers why: she still believes Daphne to be a virgin. Rather than bring her husband, Gertrude turns up with Simon, Daphne's brother. For the next few days, both Crane brothers have a terrible time to endure, as Gertrude stays with Niles and Simon with Frasier.
Daphne has announced that she is moving in with Niles. Frasier and Martin reflect Frasier: Do you remember when Daphne first came here? She was so young and naïve, I didn't think she'd last a week. Yet she somehow managed to forge a relationship with a blustery psychiatrist and a crotchety old man. Martin: And with me, too. Frasier: (pause) Yes, Dad, with you too.