Karsonface 

A blank expression that usually signifies that an individual is deep in concentration, or spaced out, or high.

Thomas had such a karsonface in 2nd period today.

Karsonface by deathdealer619 April 9, 2009

arsonface 

To intentionally set ones face on fire.

You just got an arsonface!

arsonface by edge 452 V2 October 22, 2010