The Big Rules of Engagement Episode

S2 E23: Despite going to great lengths to impress Nick's parents (guest stars Meredith Baxter and Martin Mull), Mona learns from Dee Dee that they don't approve of interracial relationships, but when she attempts to confront Nick about it, he stops her short with a marriage proposal. Meanwhile, Phyllis fears her relationships may be jinxed and hides her new boyfriend from family and friends .