A feaster of Mountain Dew and Rallys. By day it is a normal looking human. By night it transforms into a horrible mothcreature who enjoys Walker Texas Ranger.
"Shit! It's the Griffin Moth Creature of ClarkLane!"
"Don't worry. He only feast on Rallys."
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.