Abu Hajaar was a highly trained ISIS soldier who reached international fame due to his epic combat skills;
Firing at his own team, exposing himself to gunfire, refusing to assist his allies, screwing with a missile, poor firearm angling, etc, etc. VICE was able to recover the footage of the crew's hilarious exploits for all of the world to see. Instantaneously, it became a meme that will remain funny for 5 minutes until it's driven into the ground.
((What is wrong with you, Abu?))