Robert overhearss Michael talk to his girl about taking their relationship further. Robert assumes that the two will have sex in the future. In trying to discourage Micheal from doing so, Michael takes it as a sign to do so.
It's one of the ususal say no to sex episodes that most shows do. Robert Townsend showed this episode to some teenagers adn they argeed it was a good episode. However they informed him that it would have worked better if Micheal was younger as most kids by Michael age has already had sex. However that doesn't discourage the fact this was a good episode.