That's a bummer bro, i only fast food a few times a year but i always check the bag before i leave. I dont open the burgers up but i always take a quick look.
I watched a documentary a few months back about some pizza place in teh states, something like Chuckies. Anyways, the scam is they used old pizza pieces to make new pizza's. Your heard that right, if someone leaves 3-4 slices, someone else leave 2-3 slices, after they take it into the back to be'dumped', they put the pieces together, throw some cheese on top and recook it then serve it.
You might be crazy are you might be right. Think much money McDonalds would save if they reduced the amount of sessame seeds from the bun by 10%. Fastfast places would serve rat meat if it were legal.
RE: Is it the biggest scam ever?