We’ve all come across certain features on everyday objects that seem a bit mysterious. Whether it’s the small hole in a padlock, the extra eyelet on your sneakers, or that weird button on your jeans — you’ve probably just ignored them. One such item that recently went viral online left people shocked when they finally discovered its true purpose.

At first glance, it looks like just a design choice — maybe something decorative or just part of the structure. But no, it has a very specific purpose, and it’s not what most people expected. For years, users have either misused it or not used it at all. The comments section of a recent post blew up with reactions like, “I wish I didn’t know this 😅” and “I’ve been doing it wrong my whole life!”

Why the surprise? Because the real function of this object often ties to hygiene, safety, or maintenance — things we usually don’t associate with such minor details. And once you know, you can’t unsee it. Some people even found it mildly disturbing or gross, depending on how it’s used. It’s one of those “the more you know” moments that leaves you questioning what else you’ve been oblivious to.

Disclaimer: This article is intended for informational and entertainment purposes only. If you’re squeamish or prefer not to learn oddly specific facts that may change how you view everyday items, proceed with caution. Viewer discretion is advised — especially before checking the comments!