When Ben and Sam go shopping for supplies in a local supermarket they get mistaken for gay dads by a passing policeman. Ben fibs that Clyde is adopted from Vietnam. This is possibly a call back to actor Will Sasso's time on Modern Family, where he plays a rival teacher to Cameron Tucker (played by Eric StoneStreet) who's adopted daughter is actually from Vietnam.
Episode title - ' Stuck in the Middle with You' is a song by Stealers Wheel (1972)