Body tea typically refers to detox or weight-loss tea blends sold via social media, often with laxative effects. Worth conversations about safety; many such products have caused health issues. If your kid uses it constantly, ask them where they first heard it, not to police their speech but to understand which online community they are in. Most slang of this kind moves through TikTok and group chats, so seeing it in your child's vocabulary just means they are plugged into normal teen internet culture.