Warning: You my be put off making complaints about meals after reading what some hospitality staff do to the dishes of dissatisfied customers.
People who work in the food industry have taken to Q&A website Quora to reveal the revenge they've witnessed being taken on customers who have spoken up about a bad dining experience.
According to one Quora user, who worked for a "very popular burger chain" that mainly employed teenagers aged 15 to 18, "complaining to a teenager is the wrong thing to do".
Here is the list of stomach-churning customer service he has witnessed:
1. Daddy long legs spider seared into a burger
2. Different types of body hair being purposely added to food
3. Sneezing then wiping the nose with a bun (then calling it a Bacon Double Sneeze Burger).
4. Many different forms of spit and phlegm being combined with the "corrected" order
5. Wiping butt and/or armpits with food items
6. Toilet trouble - after one customer defecated on the bathroom floor and a worker was sent to clean it up, it was later revealed that his cleaning implement of choice was the nugget scoop