Dream of ballet in the sand?

I can’t remember the full dream but I do remember there being a line and in order to cross it I had to smile or else that was the end of me. Once I crossed that line sand began to form beneath me and I started preforming ballet without knowing how. It’s like my body was under a spell. It was difficult to preform in sand and kinda hurt but I had to smile. There were other women there dancing along with me but they kept reminding me to smile. I’ve had weirder dreams tbh but nothing like this. Mind you I’ve never taken a ballet class lol