'Barbaric lampshade' is a term usually said by sarcastic high schoolers. The meaning stems from 'enlightenment'. Ergo, if you're a lampshade, you're idiotic. The barbaric portion is due to you spreading your stupidity around and shoving it down people's throats.

Origin: A freshman at Woodland Junior High School, 2013.
"You barbaric lampshade!"
by Hipster2.0 January 15, 2014
Get the barbaric lampshade mug.