The Grieco refers to the early 90s b-movie actor and star of 21 Jump Street, Richard Grieco. Richard Grieco spent much of the 1990s perfecting the douchebag look with his overly quaffed hair, excessive bling, tats, and leather jacket over a wife-beater t-shirt. Grieco is the source template for the modern day Douchebag, and so he has attained exalted status on our douche shrine and scrote hierarchy. Others, like The Baio, The Tyson, the Bluntbag and even our long missing The Shocker are sources of 'bag radiation. But none can compare to The Grieco for sheer pull.
He's so douchy he's Greico.