a firecracker is a cracker with cheese on it, and then weed sprinkled on it and then cooked in the microwave or oven. pretty much the THC is supposed to get into the fat in the cheese. taste like shit, I did it once and didn't get much off of it, because when you eat weed it takes more. thats why I said just smoke it. that and I'm not so sure it'd work on a cheez-it anywayz due to it not having cheese on it, but more that its mixed in with the flour or whatever to make the cracker.