Jash (Kurdish: Caş or Cahş, literally meaning "donkey's foal"), or "" or The Light Regiments or fursan is a type of collaborator, usually a military unit composed of people of Kurdish descent that cooperates with enemy combatants against the Kurdish army, Kurdish rebels, or the Kurdish civilian population. The term is considered derogatory in a cultural sense in much the same way as quisling is.
Jash (stylized as JASH) is a web-based comedy webseries created by Michael Cera, Tim Heidecker, Eric Wareheim, Sarah Silverman and Reggie Watts. New videos are posted to the Jash channel periodically by the creative team, and team members also have their own individual pages. Jash premiered online March 10, 2013.