Penny gets ready for a showdown with Alicia (Valerie Azlynn) by stepping up her wardrobe and wearing a little dress to compete with her clear superior for the guys' affection.
When Leonard tells Sheldon he needs to use more honey than vinegar on Penny, he tries an experiment where he uses chocolate as positive reinforcement on Penny. Amazing.
Sheldon [to Kripke]: Also, I am given to understand that your mother is overweight. Raj: Oh, snap. Sheldon: Now of course, if that is the result of a glandular condition and not sloth and gluttony then I withdraw that comment.
