Beth is a "cougar chick" who Stewie recalls Peter bringing home in "Space Cadet".
When Chris wants to come home from space camp, Lois comforts him by noting that everyone makes mistakes. Stewie recalls Beth, who tried to pass of the advanced condition of her body as "experience" and tried to present herself as "fun." However, he was disgusted when she gave warning that her lower area was like a spilled apple pie.