[3D] Neporabo say they never run out of topics, then start awkward polite-speech practice and make Polka lose it

During a 3D snack party, Neporabo boldly claim they never run out of conversation topics, only to start an "awkward silence practice" where they suddenly switch to unnaturally polite speech. The bizarre tension sends Polka into a laughing fit until she frames out, and the group even resorts to weather small talk.

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