The act of getting disoriented, distracted, hurt, "fucked up", or "owned" by the "swamp fog" on the final ramp of the "Tornado Run" event on Nickelodeon Guts. It is now used as another term for getting messed up or shown up by another person or object, usually in place of the phrase "fucked up".
Person 2: Not much (invisible cloud of nasty breath hitting person 1 while person 2 talking--person 1 steps backwards two steps while covering nose ever so descretely)
Person 1 : (thinks to self " I just got fogged!")
Fred: "Horrible. I got fogged by him during my presentation. Now I have to come in Saturday to write TPS reports"