I realize the topic sounds more at home on a drug addiction forum, but it's the best way I can describe this phenomenon... When I use an overdrive for more than a minute, after I turn it off I still hear overdrive. Not as much overdrive as with the pedal, but it still sounds dirty to me. I go and listen to my amp up close and it sounds clean, but once I get away from it and listen to it in the mix, I still hear this dull and slightly buzzy sound. It's all in my head, but I still hear it that way. Overdrive hangover is what I call it. Anyone else ever get that?