Someone, usually an attention whore, who feigns a friendship with others in the presumption that everyone will return that friendship, but no one likes him/her (except for the 1 or 2 attention whore sidekicks). E-gor's can often be found at places/parties where they are not accepted, invited, or liked.
"Why is she here?! This is a football/cheerleader party, and she plays soccer! What an E-gor..."
A negor gor gor roro can be many things. The definition and meaning of the word may vary depending on who's using it.
In most cases, it's used as a definition of someone, who's being extremely, like over the top retarded, but on the internet.
In some situations a negor gor gor roro can be a caveman, but using the word as a definition of a caveman is highly rare.
In other situations, it can be as simple as "just a black person", or in some scenarios, a negor gor gor roro is something very exciting.
"OML! Aiden is really being a negor gor gor roro right now! WoW he's SO annoying!!!!"