Deadmau5 is truly the master of the art of trolling. He often shows off his trolling ability at major festivals, similar to when he trolled Martin Garrix and Avicii by playing out their respective hit singles "Animals" (with an "Old McDonald twist) and "Levels" during his set at the 2014 Ultra Music Festival. While performing at Glastonbury Music Festival, Deadmau5 proceeded to play his track "Seeya" before exiting the DJ booth, kicking back on a sofa on stage and drinking Coronas with Left Shark. It's antics like these that have made Deadmau5 such a talked about figure in the scene. He really knows how to push buttons (no pun intended). Check out the video above.