Psilomasticate Share definition Flag Verb. to masticate (chew) on psilocybin-leaden mushrooms. Does Jon like shrooms? Oh, yeah. He's been known to psilomasticate with the best of them. Psilomasticate by bill_scarta August 28, 2020 0 0 Get merch Get the Psilomasticate mug. Buy Now — $32.95 See more merch