The superlative form of choky; most prone to causing choking or most suffocating.
From choky + -est (superlative suffix). Follows standard English pattern for forming superlatives of adjectives ending in -y (changing y to i and adding -est).
The evolution from choky to chokier to chokiest mirrors how English handles hundreds of adjectives, showing that even informal slang words follow the deep grammatical patterns baked into our language.
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