The grossest word to freely use in any situation. Technically it just sounds nasty, but it has no real meaning. Perfect for workplace insults.
It has been referenced in the underground album, "Sonic Colonic".
Did you get any of her lurbia in your mouth?
Don't touch that, it's covered in lurbia.
I've heard lurbia has been found in dead people.
That squished up pile of vile bugs reminds me of a glob of lurbia.