TikTok is an app that lets you make short videos and share them with others. You can choose different songs or sounds to add to your video, and then you can use filters, stickers, and other effects to make it look cool. You can also watch other people's videos and follow them if you like what they make. On TikTok, you can see a lot of funny and creative videos from people all over the world. However, there are some safety concerns and rules you need to follow to stay safe and use the app properly. So, always follow the guidelines and don't forget to have fun!