@bhawthorne @troll5 Actually that's an excellent question. You become cool by incorporating cultural capital, as defined by Bourdieu in La Distinction and Les trois états du capital culturel (both published in 1979). I probably should sum it up on Gemini, I have an English-speaking section there. Anyway, you incorporate cultural capital on your free time, and this is mostly true for the upper class (social media being a distraction for the lower class).
@bhawthorne @troll5 Having a high IQ also helps and this is still something specific to the higher class; I define mine as the transfert of my basic trust ((?) Abram Kardiner) to school symbolism, which was introduced to me since my birth or even before by my mother, who's a good enough mother, would talk to me while being pregnant, etc.