Slang term used to describe an item or object that's flipin awesome - something that you'd swap an arm or your own granny for. Comes from the British luxury brand that specialises in making concrete furniture and brick wall for graffiti artists. The brand is well known in London for the concrete door stops it leaves around the city for people to find.
If your mate had a concrete doorstop with a steel handle or a flying car that doubled as a submarine you'd say 'that's totally johnny concrete man'.
Johnny Drama is Vince's older brother from the HBO Series Entourage. He is an actor that can't find work. Although he was the star in the t.v. series "Viking Quest". He is still living in the past from the show by acting like he is hot shit.
Drama is one of the funniest guys from Entourage. He gets all the babes and normally hangs out with Turtle.