What's an adjective for "of or pertaining to rocks"? I'm looking for a word to fit before 'avicide', to make a comment about the phase "kill two birds with one stone"
@tithonium ... never mind just saw your next toot.
"petrologic" is technically incorrect, as it's of or relating to the study of rocks, but probably close enough.
@tithonium you could also try "slingshot" or some other reference to the way that the stone becomes a murder weapon.
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