Putting any kind of frug on somebody's drink is a completely different thing than choosing it for yourself. That said, anybody know what chemicals McDonalds has been putting in your food? It's not a pretty question.
The chemicals added to food that most likely cause trouble are insecticides and weed-killers (enough said) that have been washed off vegetables, pollutants that ended up in fish, and the more insidious growth hormones and antibiotics fed to livestock and poultry. The antibiotics stimulate the resistance of disease germs; the growth hormones promote early puberty in children. Those end up in the food supply long before the food gets to any restaurant or grocery store.
Of course the heavy use of frying puts much fat into our diets... if we eat the high-fat foods.
Anyone who introduces a date-rate drug into someone's drink is a literal poisoner and should be subject to a prison term for assault.