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1.
A clever means of avoiding an on-the-spot fine for drinking alcohol in a restricted zone; employed by ne'er-do-well's in Cannock, Staffordshire. 

To create a Cannock-Coffee, simply take a discarded Costa coffee cup and after ensuring it is empty, refill it with your favourite brand of super-strength lager. 
"Hey Ralph, fancy grabbing a couple of Cannock-Coffees and heading to the church gardens, once we've had this skag?" 
by iclimbedfences February 22, 2013