Episode 129 of "Malcolm in the Middle"
s06e22 Mrs. Tri-County
Title: Mrs. Tri-County
Original Air Date: 05/15/2005 on Fox
Plot Outline:
Unbeknownst to Lois, the boys enter her in the Mrs. Tri-County Pageant as a joke. When they overhear the other contestants remarking that Lois doesn't have a chance of winning, they plot to help their mother take the crown. Meanwhile, Malcolm is blackmailed into delivering love notes to a contestant for Herkabe, and Reese discovers that, according to the Mrs. Tri-County Pageant manual's scientific formula, he is beautiful.