OK, I have the topper for fast food yuckky stuff. Many years ago, I worked for a facility that trains individuals with handicaps and helps them find employment and housing in the community. Frequently, this type of individual have difficulty controlling thier, ummm, drives. One of our clients got fired from Hardees because he was caught doing something very inappropriate into the gravy. The health department closed down the place and they had to completely disinfect every surface in the place and replace all food supplies before they could reopen. I have NEVER gone back to that restaurant again. And NEVER order gravy from ANY restaurant!
Unfortunately, because fast food pays the least, they don't get the best quality workers. My son worked for McDonalds for several years, both as crew and as management, and he had just an awful time trying to get people to give a **** about thier jobs. No matter how much training you give someone, you just can't force good character.