A condition characterized by black soles, dirty toenails, flip-flop tan lines and possibly blisters. Cannot be cured by wet wipes or jugs of water. A symptom of carefree frolicking and dancing, most likely to jam bands. Often takes weeks to recover from, usually requires the assistance of an Asian professional and/or a heavy-duty pumice stone.
-What happened to your feet? You look homeless!
-Oh... Rothbury. I haven't been able to get them back to normal.
-Dude, that was three weeks ago!
-Layoff, it's just my festival feet!