Here is the transcript for the episode, "Call Me Billiam".
(At the Manta's house, William is in his race-car outfit swimming around the living room, pretending to be a racer)
TBA
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Rayna: Oh, William! You're old enough to know how to play carefully in the house.
William: I'm sorry, mom.
Rayna: I know you are. But I need you to be more responsible. You're not a little gup anymore.
(Rayna swims off.)
William: *sighs* Mom's right. I'm not a little gup anymore.
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