Teddy and PJ pose as Gabe's parents as they attend a conference with his elderly teacher, Mrs. Monroe (K Callan). Everything goes well until Mrs. Monroe spots Teddy on a date with her latest crush, Derek (Reid Ewing). Mrs. Monroe thinks that Teddy is... (more) "cheating" on her husband. Meanwhile, PJ and Skyler go on their first official date; Bob bets that Amy cannot build Charlie's new playhouse without his help.