While it is possible that some individuals might have engaged in such behavior, intentionally tampering with a meal and serving it to a customer, even if they were rude, is highly unethical and illegal in most places. Food tampering is a serious offense that can have severe consequences for both the perpetrator and the customer.
Restaurants and food service establishments generally have strict hygiene and food safety protocols in place to ensure that the food served to customers is safe, clean, and free from any intentional contamination. Violating these protocols can lead to legal repercussions, closure of the business, and damage to its reputation.
Additionally, serving tampered food to a customer is not an appropriate way to address rudeness or dissatisfaction. Restaurants and their staff are expected to maintain a professional and respectful demeanor, even when faced with difficult customers. If a customer is being rude or difficult, restaurant staff should try to handle the situation calmly and professionally or escalate it to a supervisor or manager if necessary.
If you encounter rude behavior as a customer or an employee in a restaurant, it's best to address the situation calmly and respectfully or seek assistance from a supervisor or manager to resolve the issue. Resorting to any form of food tampering or revenge is not only morally wrong but can also have serious legal and ethical consequences.