It's a Living S02E07 - Mann is Mann

Sonny's obnoxious brother Buddy arrives in L.A. for a visit, which doesn't please Sonny one bit, but when Buddy introduces his fiancée Suzy to his kid brother, she makes it quite plain that she rather prefers Sonny's company to Buddy's by making erotic overtures to him.  Meanwhile, Nancy and the girls search for a missing raffle ticket in which they have won a new car.