Gabillionaire - A person who made up a word to sound fancy and then used it

A person who made up a word to sound fancy and then used it so much they became what they made up.

'I’m a gabillionaire, and I still don’t know what a gabillion is.'

'Gabillion? I’ve got a gabillion of problems and no solution.'

'I’m a gabillionaire, but I still don’t know how to be one.'