David Crystal..(Bling)

hye friends..i already hear the bbc learning english..i choose the word bling,i just hear the david's crystal voice without looked at the sentences..i try to understand whats the meaning of the bling.Bling use to describe diamond and jewellery and kind of showy clothes..Hip hop song group also use the word bling.bling.The bling sound symbolic character word..so in my opinion the word bling use to describe the shining things by use a metal..my experiance hear the david crystal firstly i feel so excited when hear the first sentence..and after that i cant catch up the word clearly, the voice also so faster but overall its good and i can understand little bit what he said..so i can hear the next word later..