Definitions by Mike Z.

twillionaire 

Used to describe performers/business people who made their fortune marketing to pre-teens/teenagers. (a.k.a. tweens)

"Despite her 'Punk' exterior, Avril Lavigne is a certified multi-twillionaire."

twillionaire by Mike Z. July 4, 2005

cellphobo

A person lacking any kind of wireless communication. (cellphone, pager, blackberry.)

I couldn't get in touch with my brother during his vacation because he's a cellphobo.

cellphobo by Mike Z. July 4, 2005