someone who thinks they are better than other player/ causes needless arguments. also is a high level/ rank, but is completely crap at whatever they do.
Two real life incidents:
n00b: hey you english fag! big ben big ben! english teabag
! you jealous of america!
english guy: shut the fuck up.
n00b gets a kill. starts teabagging body. killed player goes to spot of death, sees n00b still teabagging body. n00b dies explosively from behind.