Don't Ask, Don't Tell
Nancy introduces her new girlfriend, Sharon, to Roseanne and Jackie. Sharon invites them to go out dancing with she and Nancy at a gay bar, and winds up giving Roseanne a romantic kiss. This freaks Roseanne out, but she has a hard time figuring out why. Jackie is openly uncomfortable about people assuming she might be gay, which prompts an amused Roseanne to behave like they are a couple.
