What's the most unexpected TikTok trend you've ever seen?

One of the most unexpected TikTok trends I've come across was the "Milk Crate Challenge." It involved stacking milk crates in a pyramid shape and attempting to walk up one side and down the other without falling. It gained popularity quickly but was also widely criticized due to the high risk of injury. It was unexpected because it combined a seemingly harmless everyday object with a dangerous physical challenge, leading to a wave of both fascination and concern online.