While monitoring Peter's vital signs from his space craft inside Peter's body, Stewie realizes Peter's pulse and heart rate are increasing. This means he is either watching Batman, or he and Lois are about to have sex. Turns out Peter was watching Batman.

Stewie is not happy at the idea of Lois and Peter having another baby, fearing what will become of him. He asks Rupert what he thinks happened to Bobby on the Brady Bunch after cousin Oliver was added to the mix.

Peter and Lois travel to Carol's (Lois' sister) home after finding out that her husband left her while she is 9 months pregnant. Peter tries on one of Carol's husband's shirt. He does this, knowing it is several sizes too small, knowing it is too small, so he can pretend to be David Banner transforming into the Incredible Hulk.

Stewie plays the song 'Hungry Eyes' on his little piano at Quagmire's 'sexy party'.

Stewie has a checklist while inside Peter's body. When he gets to the air supply check, the band Air Supply's song 'Lost in Love' plays.

Stewie and his "sperm brother" Bertram sing the song 'Up Where We Belong' in an attempt to make Peter cry.