Peggy substitutes in the geometry class at Arlen High, where she attracts the ire of local businessmen for giving a failing grade to a star football player.
After performing at a retirement home with his class, Bobby receives a ventriloquist's dummy from one of the residents there. Hank begrudgingly warms up to the idea, but Dale is deathly afraid of it due to a traumatic childhood experience.
After Hank and Peggy unknowingly board a prostitute, her violent pimp shows up looking for her. Then they soon discover that Hank has been unwittingly "pimping" her all around town.
Hank joins Bobby's science class in opposition to a plan to drain the quarry and put a landfill there, because it will reveal a practical joke which he, Dale, and Bill played on Boomhauer in high school.
Bobby pretends to be a high schooler with a congenital kidney disease that has stunted his growth. He later adds to the charade by claiming Connie has a vestigial tail.
