Derived from "Smart Idiot." One of those annoying, over-educated, know-everything people that are armed with a bevy of useless facts. They are completely lacking in common sense and charisma. Usually found in their native habitats of Wall Street, or leadership positions in companies that go broke shortly thereafter.
Almost anyone that helped blow up Wall Street firms during the mortgage meltdown. Anyone that worked at Bear Stearns or Lehman brothers. In the movies, the Smidiot is usually an Eddie Haskell type character, a smarmy know-it-all.
When a bunch of dumbies in your class just won't shut up and you're trying to read Hamlet (with no success) and you try to insult them while asking them to be quiet politely but they are too retarded to listen.
Daryen:*screams at class* "SHIDIOTS!!!!"
Mykala and Chloe:"Whoa Daryen calm down..."
Daryen:*takes revenge by tickling Chloe 'till she dies (almost)*
Mykala:*stares and laughs*
Chloe:"Thanks for helping!!! *sarcasm*"
Daryen:"HAHAHAHAHAHAHHA."