Moe Letter Blues is the twenty-first episode of Season 21, which aired on May 9, 2010. The episode was written by Stephanie Gillis and directed by Matthew Nastuk and guest stars Don Pardo as himself. The main plot of the episode is a parody of A Letter to Three Wives.
Homer, Apu, and Reverend Lovejoy take a day trip with their kids on Mother’s Day so their wives can have a day to themselves, but the three of them receive a message from Moe saying that he’s leaving Springfield…with one of their wives.