Hypocrite: After the first debate, Lois insists she had no choice but to humiliate Peter for her cause. After Peter's smear campaign against her, she is outraged he could be so cruel as to humiliate his own spouse for the sake of winning.
However, this could be debated since Lois also says she didn't enjoy humiliating Peter, but Peter clearly did.
Mistaken for Masturbating: Peter knocks on Chris's door when he hears thumping noises and moaning and walks in on Chris trying to break his paddle ball record. Subverted after Peter gives Chris some girlie magazines and leaves the room. He hears the thumping and moaning again — and it's not from Chris's paddle ball, as Peter has it in his hands.
Mythology Gag: Stewie sings "I've Grown Accustomed to Her Face" a reference to Rex Harrison's performance in My Fair Lady, which was the inspiration Stewie's voice.
The Stoic: Mr. Fargas, after getting on medication:
Peter: Fargas, what happened to you? Somebody give you a fun-ectomy? Fargas: No, they gave me these by order of the School Board. They said it evens me out. Sorry to fly off the handle.