Formed from combining existing expressions 'Bruv' & 'Blud'.
Slang term for friend or sly joke to be said to your stereotypical 'Rude-boy' in greeting. Not only too cheekily make fun of ridiculous appearance and expressions, but also get away with it.
"Come to lesson Lois" said Sandra
"Naa Bluvv" said Lois
"What?" asked Sandra
"I was going to say bruv and thenstarted to say blud."
They both then laughed and walked into cars.