something that is beyond awesome and amazing yet it is ghetto but fantabously cool at the same time. just like the color purple and Gir from Invader Zim. And Orchestra but mostly the violin players because Violas suck monkkey butt and have hairy backs.
violin players are Awesomely-Amazingly-Ghetto-Fantabously-Cool Gir is Awesomely-Amazingly-Ghetto-Fantabously-Cool the color purple is Awesomely-Amazingly-Ghetto-Fantabously-Cool Fried and Upside down sistas are Awesomely-Amazingly-Ghetto-Fantabously-Cool violas are not Awesomely-Amazingly-Ghetto-Fantabously-Cool
You use it when You are uninterested in what someone has to say, but You want to seem interested in it. Or when You dont know how to reply to something and want to change the topic