I remember this thing called 'Vine' which was similar and then went out business. But basically from what I've seen in TikTok it's either:
- young woman with a lot of filter doing sexual innuendo for views
- SJW rant trying to edjumecate you with some bs that doesn't apply to the real world
- wacky dance or skit
I think it just became a fad because a bunch of Zoomers who were too young to know about Vine got addicted to short little hype clips. And obviously Chinese companies are probably throwing a lot of money towards influencers.