These pictures and videos of food service workers tampering with food went viral online.
Taco Bell said the taco shells licked by an employee were not served to customers as part of training for a new product and "were in the process of being thrown out." The employee has been fired.
A photo of a barefoot worker preparing food in a Taco John's kitchen in Charles City, Iowa, made its rounds online. The woman was fired, ABC reports. (Images compiled by Susanna Kim, Good Morning America)
This picture of a Wendy's employee streaming ice cream from the soft serve Frosty machine directly into his mouth made the Internet rounds in June.
Earlier this year, a KFC employee in Johnson City, Tenn., was fired after posting a photo on Facebook of her appearing to lick a pile of mashed potatoes.
In the summer of 2012, a photo of a Burger King employee standing in two containers of lettuce was posted on 4Chan, with the words: "this is the lettuce you eat at Burger King."
A Taco Bell employee in Fort Wayne, Ind., tweeted a photo of himself urinating on a plate of nachos, tagged "#pissolympics," "#nacobellgrande," and "guess where I work". The employee pointed out that the food was thrown away, but he was fired anyway.
In April 2009, an employee of Domino's pizza shared a video online of a coworker putting cheese up his nose, blowing mucus on a sandwich and putting a dish sponge between his buttocks.
A Burger King employee who took a bath in the restaurant utility sink was fired in Xenia, Ohio, in 2008.