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Verb: Variation of "shart" occurring in the bathtub. An anal release in a bathtub intended to be a fart that unintentionally contains fecal matter. A portmanteau of “shit” and “tub.” Noun: An objectionable person, or undesired company, derived from the verb form of shub; a reference to the little unwanted turd in the tub after shubbing.
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