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2.
When a cellphone shows ample bars of service to make a phone call, yet will not transmit or receive.
When a cellphone shows ample bars of service to make a phone call, yet will not transmit or receive, the phone is suffering from "Blue Bars"
by Articulatedtugboater December 05, 2011
 
1.
The Blue colored bar that contains six definitions with pictures that lies underneath the regular definitions. If you type a definition in with evil intent, a Middle Eastern country will pop up. If you type a definition in with a badass yet curious way, "Arnold Schwarznegger will pop up.
Nobody knows why the Blue bar exists on UrbanDictionary.com. It is thought that some dude named Chris invented the Blue Bar sometime in 2004 at the University of Arizona as a present for the UD boss himself, Scott Peckham. I can't wait until somebody hacks it and puts new pictures and definitions into it *sigh*
by Da Wizard Of OZ December 14, 2009
 
3.
bar where gays hang out...
hey you fag.... want some fun.. lets go to a hot blue bar
by dkid November 09, 2005