The Valentino Submergence
Leonard and Penny go out to eat for Valentine’s Day and realize that they are getting older after Penny is addressed as “Ma’am”. Howard and Bernadette plan on using their new hot tub and find a rabbit floating in it. After nursing it back to health and naming it Valentino, the rabbit bites Howard, who heads off to the ER for a rabies shot. Bernadette decides for the moment not to tell him that she is pregnant. Raj finally decides to break up with Emily and then calls Claire, who has just gotten back together with her old boyfriend. Emily does not take him back, sending Raj into a depression. Sheldon and Amy host their first live episode of “Fun with Flags”. Taking live phone calls, wherein Amy ends up speaking with Raj and Barry Kripke about their love lives, thoroughly depresses Sheldon. Amy does get Sheldon to admit their own breakup has made them a stronger couple. They are interrupted by Penny and Leonard, who barge in dressed as Cupids, throwing confetti in an effort to feel young again.
Title reference: The name given to the rabbit that almost drowns in the Wolowitz hot tub.