A Coco Puff is the product that is a result of trying to smoke cocaine in a cigarette.
What you do in order to make one is you take a regular filtered cigarette, you wet it all around with saliva, then you get about a bumps' worth of coke, spread it on the moist cigarette, let it dry, and then smoke!
These work great for doing lines then taking a drag. It definetly ups the rush.
"Hey let's buy some cigarettes so we can make some of those Coco Puff's."