A dumb word that a bunch of pre-teens came up with on the K-Mart back-to-school commercial to describe their style. It combines the words "bling" and "attitude" thus:
Warning: Do not let this become part of your everyday slang!
Out of style teacher: "Students, what's blingitude??"
Pre-teen who thinks she is cool: "It's my awesome style!! I think I am totally cool!!"