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Jody (Johnnie Whitaker) and Buffy (Anissa Jones) secretly conspire to build a clay figure, to be presented to Bill (Brian Keith) as a "Best Uncle" award. Unfortunately, the twins are allergic to clay, and both fall ill as a result. Because the kids won't tell him what they've been up to, Bill becomes convinced that their illness is due to his own bad parenting--and this is far from the last false conclusion to which Bill jumps in this episode!