How's this for not believing in your own product? "McResource Line" — McDonald's' employee-only resource and advice site has been giving all kinds of not-so-good-for-the-company advice lately. From advising workers to get a second job, to suggesting they sell their stuff for quick cash and more.

The latest one will shock you. Stay away from fast food..

An image posted on the site labels a McDonald's meal of hamburger, fries and coke as an "unhealthy choice". It warns employees against consuming such foods because they are almost always "high in calories, fat, sugar and salt".

"It is hard to eat a healthy diet when you eat at fast-food restaurants often," the site goes on to say. "Many foods are cooked with a lot of fat, even if they are not trans fats. Many fast-food restaurants do not offer any lower-fat foods. Large portions also make it easy to overeat. And most fast food restaurants do not offer many fresh fruits and vegetables."

Want to eat healthier? Stay away from McDonald's.

The site suggests eating at places that offer a variety of salads, soups and vegetables.

In a statement to CNBC, McDonald's insisted the website's tips "continue to be taken entirely out of context."

Not great PR for McDonald's.