Something that is too extreme to be measured. The Richter Scale is officially used for measuring earthquakes; anything above 7 is described as a major quake. Anything "off the Richter Scale" (or "Off the Richter") is therefore an extreme example.
"Man, that surf was totally off the Richter Scale".
by Where's Mike? November 14, 2008
Used by only the awesomest of people. Used to describe something amazing or not even explainably unbeleivable.
"dude, we went boardin' today and I landed a jump that was totally insane off the richter scale."
by ~zamalzia! January 05, 2009