The customers of McDonalds are recently discovering the purpose of the knobs and bumps on top of beverage lids and are expressing their delight at this discovery.
A video shared on the Twitter account “Today Years Old” shows someone demonstrating how to press the buttons around the straw on the lid of a drink from the fast-food chain.
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Have you noticed the drink cap? It doesn't just have a space to add the straw, as it has characteristics different from any other lid, which serves to identify the type of drink inside the glass. If you still haven't noticed the rectangular shape, now you'll understand the real reason!
Although many comments revealed that some people already knew the purpose of those circles, there was widespread surprise when discovering what the rectangular ones are for.
Many customers were right in deducing that the circular buttons work as visual indicators to identify the beverage contained in the glass. We're sure you don't know the right answer either.
Each circular button on the lid of the drinks has a specific label, such as “diet”, “cola”, “RB” for root beer and “other”. The function of the smaller rectangular buttons next to the circular buttons wasn't as obvious. These rectangular bumps are used to correct errors if an employee presses the wrong circular button while preparing the drink.
The circular buttons, of course, serve to identify which type of drink the employees have poured into the cup. For example, if they accidentally hit the “RB” button instead of the “diet” button, they can simply click on the bump next to the “RB” button to reset the lid and correct the mistake.
Yep, we're stunned here too! Did you know about this interference in communication that the cap can demonstrate?
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