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First thought: cysteine's probably going to be my villain here. It needs a dramatic backstory because otherwise it won't land right. Maybe compare it to a messy roommate? That feels relatable. Breaking down the components: - Cysteine is an amino acid, so I should start by treating it like a character - "Free" usually means absence in this context – gotta make that contrast funny too User's request makes me think they're probably tired of dry definitions or maybe preparing for something absurd. The edgy part suggests they want either humor with dark undertones or genuine unsettling scenarios. I'll go both ways by offering two options. Option 1: Playful but slightly ominous - Cysteine as the "glorified slime factory" - Mocking its sulfur smell like a punk rock metaphor - The example sentence should feel like we're warning someone about this disgusting thing Option 2: More genuinely unsettling - Compare it to mold in a shower (gross real-life parallel) - Medical horror angle with protein chain tangling - Maybe work in some science-y details for credibility? Wait, user might actually be testing how I handle edgy
