Tucker

Season 1, Episode 12: Señor Lyzardo

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Seth goes on vacation and leaves his pet iguana with McKenna, whose parents won't let her have it in the house. Thinking it's the perfect bridge to dating McKenna, Tucker offers to take care of it until Seth returns -- even though he'll have to keep it a secret since Claire doesn't want it in her house any more than the Reeds do. The iguana turns out to be nowhere near as housebroken as McKenna swears it is -- which makes Claire think that Leon is wetting the bed again. Later, the iguana wets Tucker's bed, and Claire puts Tucker through a humiliating 12-pee program.