Couples, friends and siblings are unveiling their own secret languages, quizzing each other on their so-called "friend dictionary" in a trend sweeping TikTok.

With many elders dying, project to create a digital Hoocąk-English dictionary was an effort to preserve as much linguistic knowledge as possible.

“Skibidi,” pronounced SKI-bi-di, is one of the slang terms popularized by social media that are among more than 6,000 additions this year to the Cambridge Dictionary.