Confusing sounding battle cry to stun your enemies for no apparent reason.
Scenario: You are sitting in your cube and the office is much too quiet. Let out an abrasive but controlled Eüagh! to get people to say "WTF" to themselves and possibly let out a grunt in disgust. No one will think it's funny, but you should quietly commence an uncontrollable laughter to yourself for thinking you are so funny.