A Greek Letter that looks like this: 'Σ' uppercase, 'σ' lowercase, 'ς' lowercase, used if at the end of a word
The Latin letter S came from Sigma and into English,
The symbol was then used in
math, astrology, and chemistry,
... And then it was a word used by a bunch of 5 to 12-year-old cringy kids on YouTube,
TikTok, and other platforms who think they are
cool by just over repeating a meme to describe other 'good people'.