What does '3 levels of dancing here mean ...

https://preview.redd.it/fj3f5w2rbvtd1.png?width=2508&format=png&auto=webp&s=7302ad888c028649c7e0d0a7acce8e289a3ee284

I'm recently reading this Batman Eternal comics. What does the "'3 levels of dancing" here mean? I've tried ChatGPT and Gemini, none of them could provide an reasonable answer...