Plot summary
After Hal forbids Dewey from inviting his peculiar classmate Chad over for a sleepover, Dewey goes over Hal's head and asks Lois instead. Meanwhile, Malcolm and Reese find out that they are not as popular as they once thought, and plot "revenge" on their classmates, Lois searches for the warranty papers on her 10-year-old blender that she wishes to return for minor infractions, and Hal tries to keep Lois (and anyone else in the family) from finding a nude photo of Lois he took when they tried to have sex, but were too drunk to initiate it, leading to Lois passing out before Hal.
Credits
Adapted from Wikipedia contributors, Malcolm in the Middle season 6. HTML formatting and reference markers removed.