Someone who thinks they are the maddest, coolest, smartest, sickest lad out and isnt afraid to tell everyone. When in actual fact they are actually a little bit mentally retarded.
It is the opposite of being Dardy.
Non-Turbo 1: "Hey should we invite Nick and Leif out with us this weekend?"
Non-Turbo 2: "Nah those guys are Massive Turbo's"