Getting kicked from a match in Halo 5: Guardians for team killing in Grifball. Honestly, I don't blame anybody who does it by accident because the kick notification encompasses the entire screen and you might just press "kick" accidentally to get it to go away, but seriously. Grifball is a game mode where your only weapon is a gigantic hammer that pretty much creates an explosion when you swing it, so of course if team killing is enabled accidents are going to happen.