|Season 7, Episode 17|
Lois Strikes Back
Hal gets a horrible tooth ache, but lucky for him, his friend Trey is a dentist. Meanwhile, Malcolm and Dewey lose all the excitement in their lives.
- When Lois informs Hal about his infection, Linwood Voorhees, the creator makes a "cameo" as Hal says he will visit a doctor named Dr. Voorhees.