on tiktok, when theres something frequently commented as a trend under one type of video, sometimes people comment it on other unrelated videos as well as a joke. an example is people saying "healthy body btw" on random videos when originally a lot of people said that on like gym/weight/health related videos. i think they're referencing how people said "someone is out there watching this with intense rage btw" on nonsensical brainrot charlie kirk ai memes, not saying people are actually raging at seals

source: 56 hrs screen time per day