look up any word, like bangarang:
 
1.
A common insult among 2-8 year olds, often uttered when under verbal attack or in protection of ones reputution or status.
"You're not coming to my party, You durbrain"

"Be quiet Marie, you are a durbarian"
by Professor Chris Stark October 16, 2004
 
2.
Someone that is so dumb that all you feel like responding to them any time they speak is "dur".
You're such a dur-brain.
by azbas May 14, 2008