What is?

I keep hearing these terms, on Radio and TV - Guyliner, Chillax and some other new age shit.. What are they, what do they all mean... Well, fear not my middle age Chums, because help is at hand, so sit back and Chillax with your cup of latte and visit http://www.urbandictionary.com for all kind of different shit that nobody needs to know, or care about..