The past-tense use is "Garried".
A verb derived from Garry, a character from "Ib".
Generally refers to a character being in a condition where they are hallucinating. Often happens when someone has, to borrow tabletop roleplaying parlance, failed their SAN roll.
This verb originates from an in-game event where Garry falls into this state.
The specific usage of this verb is almost certainly inspired by that magical girl anime's famous traumatizing scene, and so the tag is also used for crossover images between the two canons.