A specific from 2015 that you’re trying to track down?
In 2015, the internet saw a unique intersection of youth culture using the word "mom" as a compliment, a global resurgence in "bangs" (fringe) hairstyles, and the peak of certain digital slang. Below is an overview of these trends from 2015. The 2015 "Bangs" Hairstyle Craze
: Research from Developmental Science suggests that teens in this era faced increasing pressure from social media, leading to heightened anxiety and body image concerns.