Used to describe something or someone that is both insane and idiotic. Created April 2007 in Decatur, IL at the Decatur Herald & Review Newspaper.
It's hard to tell just how insidiotic Rick James was, but "Super Freak" will always be pure genius.
The slow painful way someone who is following a completely derailed train of logic will support or arrive at the most absurdly stupid conclusions.
Watching her Barbie-doll Brain work it's insidiotic pattern was like rubbernecking at an auto accident.
The insidiotic monologue he delivered made me seek out the sound of fingernails on a chalkboard.
Listening to her insidiotic explanation of how the colors on traffic lights were actually reversed, I realized that some people didn't have to really understand anything as long as they followed the rules.