nonebrity 

Somebody who manages to maintain celebrity status despite having done nothing to merit it.

“Tara Palmer Tomkinson is a nonebrity”

nonebrity by Andy Thorley September 28, 2004

non-ebrity 

A person famous for no discernible achievement or talent, who clings to their "celebrity" status by appearing in tabloids, gossip magazines and reality TV in an attempt to stretch out their 15 minutes of fame.

The show Big Brother had spawned a generation of non-ebrity individuals.

non-ebrity by Prophet Tenebrae February 16, 2007

nonentity

1. A person regarded as being of no importance or significance.
2. Nonexistence.
3. Something that does not exist or that exists only in the imagination

1. i am a nonentity
2. It doesn't exist, it's a nonentity!
3. Sorry kid but Santa Claus and the tooth fairy are nonentities.

nonentity by coca October 31, 2003