Impostering 

To become an imposter; or To imposter someone

Philip is impostering Brian!

Impostering by KuroDjango August 22, 2011

Imposterize 

"to pretent to be someone else on the internet using borrowed pictures"

I Imposterized that person on facebook, stole all their pics and pretended to be them.

Imposterize by Azz99 September 15, 2009

Imposternator 

A person that is trying to be someone that they aren't.

Mickey: You are such an Imposternator, you copy everyone.
Carl: Yeah, sorry.

Imposternator by Camazing Person August 21, 2013

Imposternate 

A misspoken mix between 'Impersonate' and 'Imposter'. First coined in 2008 by Cameron Haskins.

V.-To assume the character or appearance of, especially fraudulently.

Tim, look! That guy is totally trying to imposternate you.

Imposternate by loki1717 October 13, 2008

Imposting 

The act of being an imposter.

Hey! That guy's imposting me!

Imposting by Wolfie March 21, 2004

Imposterior 

Term used to describe a butt that mesmerizes you with it voluptuousness but ultimately only meets your lowest expectations

Laden with crabs and herpes sores, Crystal had quite the imposterior

Tom had to cut his night short after he found out his acquaintance from the club had an imposterior,

Imposterior by BlazinVagrant November 14, 2011

Imposting 

wtf? I don't know.

I'm imposting?

Imposting by Kerrie December 7, 2003