[img=http://img143.imageshack.us/img143/6767/empmvalley0053qr8.th.jpg]

its old screenshot but the guy is the same(he uses "<<|IG|>>" before the "KM" now)
He simply joins the game , and starts spamming some really damn annoying sounds or songs (rickroll , spice girls , "most anoying sound in the world") or random c..p inforeing langueages. Its not the first time , nor second , also hes not on yours clan list so it might be a "false" km member. When someones telling him to shut up , he just ignores it or laughs. Because mute doesnt work for some odd reason this gets really annoying. He often go scout with hide and hides in some odd places like bushes etc. I could post some screen's with players shouting at him but they contain caps lock swears so i won't( but i will if its needed).