The result of consuming psychedelic mushrooms (Psilocybin). Psilocybin is a naturally occurring hallucinogenic which produces a substantially different euphoric feeling requiring a unique name for the post consumption result. Different drugs produce different results: alcohol makes you drunk, acid makes you trip, cannabis makes you stoned, crack cocaine makes you tweek. Mushrooms make you fungled, playing on fungi or fungus.
I drank one of Tammie's shroom shakes and got totally Fungled at the beach. Fungled for hours.