Plot summary
Audrey's sister, Barbara ( Heather Locklear ), is having problems with her husband Rick and visits Audrey and Jeff. Russell and Barbara go out to a restaurant, play Guitar Hero and she kisses him. Russell tells Jeff that he intends to have sex with her after she splits from Rick. Jeff tells Adam and Russell how much he enjoys spending time alone at his and Audrey's apartment when she is out. Adam would love to spend time at his and Jen's apartment, but has never had a significant amount of time alone there during their cohabitation.
Credits
Adapted from Wikipedia contributors, Rules of Engagement season 2. HTML formatting and reference markers removed.