Episode 65 of "Malcolm in the Middle"
s04e02 Humilithon
Title: Humilithon
Original Air Date: 11/10/2002 on Fox
Director: Jeff Melman
Writer: Michael Borkow
Guest Stars: Jordan Masterson (Student #2), Deborah Harmon (Parent Volunteer), Leslie Upson (Woman), Joe Costanza (Harry Pinkman), Jeff D'Agostino (Student #5), Theo Rossi (Senior), Vanessa Lee Chester (Student #3), Jason Lansing (Student #1), Darcy Powers (New Parent), Dana Workman (Girl)
Plot Outline:
Malcolm is determined to lose his nerdy Krelboyne label and become popular now that he's in high school. Unknown to Malcolm, his parents are volunteering on the first day of school—Lois is handing out textbooks while Hal is on garbage detail. When Malcolm goes to pick up his books, Lois embarrasses him and volunteers a nickname for his classmates to use. An anguished Malcolm devises a plan to aggravate his parents. Just as he's about to execute his stunt, his girlfriend Cynthia publicly mortifies him.