Birds of a Feather - Season 2 Episode 3 Young Guns

Garth brings home a 17-year-old handsome school friend, Richard, for the holidays. Sharon and Tracey suspect Garth is gay and Dorien tells them she thinks Richard is also gay. When Tracey tells Darryl, he is concerned about the effects of people finding out that his son could be gay. Soon after, Tracey and Sharon speak to Garth, who says he is not gay. Moments later, Dorien says she was wrong about Richard being gay, as she has just slept with him.