Definition of "fall through" [fall through]

• To be unsuccessful, abort, come to nothing/naught; to be cancelled; not to proceed. (verb)

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• "No, first murder Nina Sergeevna and then fall through the floor."
• "One such shift caused P8 Blue and Dr. Elizabeth Lense to fall through a cargo bay bulkhead on the U.S.S. Defiant while it was in interphase Interphase Book 1."
• "So huge-ously huge, your bottom will fall through your pants in surprise."