I would know. When I first got into getting **** faced drunk (when I first moved out) I would DEVOUR anything in my ****ing sight. I don't get munchies from the whoshallnotbenamed anymore, that just goes away over time, IMO, though it enhances the tastes of foods, of course.
I used to get HELLA munchies when I did xanax (I had a prescription, so **** you) and also when I had a spree of opiate use, and I got REALLY nodded out and ****, I would eat like a machine at times. But only when it was before bed and I felt like passing out. Any other time and it would suppress my appetite more than anything.