I partied with geologists. Trust me they licked that rock. Totally what they do. I knew one that joked about keeping a few pebbles in his pocket of Gypsum or kaolinite or some other sedimentary rock to chew on to make a point about how much he was a geologist.

There is a whole tongue test is to tell if it’s bone or rock anyways. I bet the guy on LSD was to busy high to notice half his classmates were probably licking the rocks sober.