Flex is when a person wants to show everyone around them the cool things, achievements, or abilities they have. For example, buying a new iPhone and constantly flaunting it in front of friends is flexing. It's not just about objects, but also about standing out and showcasing your "cool" sides. On social media, we often see people flexing when they post photos from their vacation in the Maldives or selfies in stylish clothes.
Now about "flex" — it's the English version of the same thing. The word "flex" comes from "flexible," which means flexibility, but in modern culture, it has taken on a different meaning. For example, if someone posts a video showing off their acrobatic tricks, that's also a kind of flex.
In conclusion, flex or flexing is a form of self-expression that can be a trendy fashion or part of a lifestyle. The main thing is not to overdo it and remember that value is not in the things we have, but in who we truly are.