McDonald's worker reveals why you should always ask for a receipt

There's a good chance you never even glance at your McDonald's receipt after the cashier hands it to you, but you should still ask for one every single time you place an order, according to one McDonald's employee.

Kamran Adnan, a Quora poster who claimed to have been employed by the Golden Arches in London for over a year, said asking for receipt is a surefire way to alert your cashier that you may be a secret shopper — therefore ensuring you're treated like royalty for the entirety of your visit. "It is easy to spot a gapbuster because they always ask for a receipt," he said in his post, adding that secret shoppers usually ask for proof of payment so they can be reimbursed for their meal by their employers. Considering most customers aren't concerned with documenting their Big Mac purchases, it does make sense.

According to Adnan, it works especially well if you visit the restaurant during peak hours. "Basically between 12-2 and 5pm-7pm workers have to be extra careful because that is when gapbusters (mystery shoppers), who are paid, visit McDonald's restaurants and rate their experience. This then goes to the overall store rating and every store manager will do everything to ensure this rating is as positive as possible," he explained. That's pretty helpful information, especially since those are also the times you can usually count on the longest wait for your food — and sometimes the sloppiest sandwich.

So what exactly do you get when McDonald's employees think you're working undercover? According to Adnan, you'll get fresh food, hot fries, and priority over the other customers. That's one way to make sure you get the most out of your lunch hour — even if it is a bit sneaky.