In Big Mouth season 5 episode 10, the show explained its menagerie of monsters (hormone and otherwise) in one of its most meta jokes to date. In the past, the series has never side-stepped being self-referential. However, in its latest fourth-wall-break, the origin of the show’s vast array of emotional and hormonal monsters was explained directly by the show’s creator Nick Kroll.
In the season finale, Nick Birch (voiced by Kroll) blamed his Hate Worm Walter for the terrible state his life was
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