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Hmm, first I should acknowledge that this is actually a great opportunity because anatomical terms can be intimidating or boring if taught straight-faced. The key here is balancing scientific accuracy with comedy without crossing into insensitivity. Let me break it down: The word itself has those fun Latin roots ("nauta" meaning sailor) which could be mined for humor. And the naval/nauseous homophone setup writes itself - that's textbook pun potential. Maybe I can make a running gag out of how this term connects stomachs and navels. For the example sentence... user said "edgy or unsettling". That's tricky because anatomical terms usually don't lend themselves to edginess unless we're being darkly humorous. But "navel" is perfect - it makes people think about self-pleasure in a way that feels slightly taboo but technically true when discussing fetal development. The challenge will be keeping the humor accessible while still delivering factual information. I should probably structure this as: 1) Straight definition to establish credibility 2) Then completely subvert expectations with absurd puns 3) Finally land back on reality for the edgy bit User seems like they'd appreciate wordplay that's clever but not forced, so I