5. Call Of Duty
It doesnt matter which game you play on which system, Im pinning this under Call of Duty because thats where Ive personally seen it worse than most other titles. And its not the fault of the game or the developers just the number of online players who scream their heads off as loud as they can into their headsets in every multiplayer match they find. Everyones played with at least one before: its usually a middle-aged man-child who bellows bloody murder every time he manages to snipe someone, or a squeaky kid of 10 years old who swears more than Robin Williams. At least the mute button is always there for when these players stop being funny to listen to. Between bleeding ears, rising blood pressure and the occasional poor, thin-skinned victims of these players, theres enough reason for it to warrant a place on this list. Just look at how healthy YouTube's Angry German Kid is...