Derives from the phrase "Why are you so easy?", which is how one with many hours inquires why the person they just killed was of low skill.
Person 1: *slash slash slash*
Person 2: *hit hit slash hit*
Person 1: *dead* wtf
Person 2: lol y u so e z
Person 2: *hit hit slash hit*
Person 1: *dead* wtf
Person 2: lol y u so e z
by I.C. June 26, 2006
Get the y u so e zmug.