It's been said that real slang has three qualities- it's new, it's cool and it's soon gone. It's new because it suddenly appears almost overnight as a 'separate' mother tongue language. It's cool because . . . yeah, you guessed, it's creators are 'cool' and that means teenagers; and it's soon gone because sadly everyone, even teenagers, must get older and as they do the 'coolness' of their teenage vernacular becomes less cool and eventually goes the proverbial 'way of the dinosaur'.