yarkoni 

Someone who is very annoying, and never passes up the chance to make fun of someone.

Person 1: Wow, Jon just failed a test and Sheir is making fun of him.

Person 2: Yeah, he's such a yarkoni.

yarkoni by liljon November 6, 2008

yankonize

To change slowly but permanently from being a modest and low-profile person into king of the world.

After he got fully qualified he suddenly yankonized.

yankonize by Bingel February 21, 2010

yarkon

Anything that you deem appropriate.

Man she is a real yarkon.

yarkon by Guy from Perry October 30, 2003