McDonald's worker reveals what 'buttons' on drink lids really mean after customer is left confused

A baffled McDonald's customer couldn't figure out the 'buttons' on the fast-food giant's drink lids and sought enlightenment - and now, staffers have spilt the beans on their actual purpose.

These buttons come in handy to distinguish sodas like Coca-Cola, Diet Coke, and Coke Zero in large orders without the hassle of a sip test. Labeled as 'Diet/Light,' 'No Caff,' '1', and '2', a perplexed patron noticed the number one button punched on one of their sodas and was clueless about its significance.

In search of answers, they turned to Reddit: "My question is about the McDonald's drink lids which have the 'buttons' on them. I just ordered two drinks, one Diet Coke and one Coke classic, and on one of them had the number '1' button pressed."

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They continued, puzzled: "The buttons are the numbers 1 and 2, no caff, diet/light. The only one pressed was the number 1. Which one is diet? Should they have just pushed the diet one in? The number 1 means nothing to me but is important I know which is which. Thank you! " Luckily, McDonald's insiders chimed in to end the confusion – it turns out the labels above the buttons that threw the customer were essentially meaningless.

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One employee responded: "Yeah seems to be different for every store but we usually just push 1 random button for Diet Coke and then either 2 random or all 4 buttons for Coke Zero. "It's just faster to push random buttons than spend the time to actually find the diet button on every lid I guess. " Another worker chimed in with: "We press one for Diet and either two or four for Zero."

A third added: "Procedure is any one for diet and two next to each other for zero. " So, if you're left scratching your head over a drinks order next time, remember that one button pushed in signifies the diet version of the drink, and either two or four indicates a zero sugar version, reports the Mirror .