An Irishman has left diners baffled after he shared a little known hack to get your McDonald's order for a fraction of the cost.
The savvy customer's tip could make your trip to the fast food chain even more affordable, and it is easier than you think.
Taking to TikTok, food blogger Glen Gillen, who shares his food experiences on TikTok, shared the hack with his followers.
READ MORE: Expert says Irish households need to start preparing as clocks go back on October 30
Sitting in his car outside a McDonald's restaurant, he said: "All these receipt hacks, how does nobody know about this?
"On the small print on a McDonald's receipt, it says: 'Get a Big Mac and fries for €3.90 if you fill out a survey'."
Glen then showed how he completed the survey in a matter of minutes before heading inside the restaurant to collect his meal.
Arriving back to the car clutching the coveted order, Glen's pal said she paid just €3 instead of €3.90 for the burger and chips.
Glen was shocked and told his followers: "Keep. Your. Receipts. €3 folks. Top of the range!"
The original Big Mac meal usually costs €8.10, with the hack saving a phenomenal €5 for customers every time they order.
Glen's followers took to the comment section to point out that although the tip provides big savings, one important part of the meal is missing.
One person said: "That been on receipts for like yearssss"
Another wrote: "Yeah you don't get a drink though".
While a third said: "I've been doing that for a few years, drinks not included, bring your own".
Others suggested even easier ways to get the deal.
They said: "If you go on the macdonalds app if get it for same price and not have to fill out survey".
The news comes after McDonald's announced the launch of an adult version of their iconic Happy Meals.
McDonald's has partnered with Cactus Plant Flea Market, a fashion label that focuses on creating original streetwear, for a new meal deal for the month of October.
Running through till October 30, McDonald's will offer the Cactus Plant Flea Market Meal Box in the US only.
In the adult's Happy Meal, customers get either a Big Mac or a 10-piece Chicken McNuggets, as well as a soda and fries - and one of Grimace, the Hamburglar, Birdie and newcomer Cactus Buddy to play with.
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