It means a mantra, from Douyin short video blogger @HanYaoVHanLuboneless Xiaoli’s family

Meme (Pinyin: gěng), Internet slang, often appears in Variety shows and the Internet. The so-called "Geng" means the point of laughter, and "Geng" means to pave the way for the point of laughter, which is a misuse of the word "哏". Generally speaking, memes are used for popular things such as variety shows, animated series, animated movies, live-action dramas, live-action movies, graphic novels, video games, etc.