Mother finds blood in daughter's Burger King meal
(www.nbcnews.com)
In some areas its probably a thing. Since burger king is a chain, theres nothing stopping some crackhead from simply buying a franchise and setting up their meth lab in it. This is ancedotal, but my grandmother used to be a military nurse, and she knew where to get certain illicit substances from McDonalds at the right time of the night.