Peggy, Hank's wife and Bobby's mother, is a substitute Spanish teacher at Tom Landry Middle School. She is endowed with large feet and often-unjustified self-confidence.
Peggy tends to believe that she's smarter than everybody else, and always right about everything. When events reveal her ignorance or naivete, she generally blames everything and everyone else, rather than question her own skills or knowledge. Her Spanish, especially her pronunciation, is atrocious, yet she is inordinately proud of her "fluency" in Spanish.
Peggy is, however, self-conscious about the size of her feet. In several episodes, her large feet have played a leading role, including one episode in which a porn film producer wanted to film Peggy's feet for foot fetishists.