Megan Heyn

When the guys take fencing lessons from Barry Kripke (recurring guest star JOHN ROSS BOWIE), Sheldon finds himself in an awkward position when Kripke expresses interest in Amy. Also, Stuart struggles to bring in female customers into the Comic Book Store, so Penny, Amy and Bernadette come by to help him out.

When Caroline's effort to sell cupcakes to a trendy new coffee shop in the neighborhood fails after the owner says they aren't pretty enough, she persuades Max to take a cupcake-decorating class.