|Season 7, Episode 21|
"Morp", or "Backwards Prom", is the 150th episode of the series and the 21st episode of the seventh season. It aired on April 23, 2006.
Malcolm aligns himself with the unpopular kids to form an anti-prom they call "Morp". Dewey discovers there aren't any childhood pictures of him, so he concocts an elaborate scavenger hunt to punish Hal and Lois and throw a party for Jamie. And for the senior prom, Reese gets paid to take Janine, a studious girl in class, but only after she gives him a makeover and sends him to finishing school.
- One of the high school students that Malcolm sets up Morp with is played by Kate Micucci, who at the time of filming, was 26 years old.
- Dewey mentions that Ida lost her leg a year ago. This is a callback to the episode Ida Loses a Leg.
- Kelly, from this episode, is played by Catilin Crosby, who previously played the role of another popular teenage girl from Malcolm's school named "Joanne" in the episode Watching The Baby.
- "Circus Burger" from the episode Reese's Job appears again in this episode, as one of the places Hal had to go to in order to get all the contents on Dewey's scavenger hunt.