Dreamt I was at an all-day music festival, and when it was over, I walked back to a neighborhood where I had left my chair (for reasons unexplained in the dream).

It was dusk, and getting darker as I encountered a stranger who told me he had seen a man wearing a mask wandering around, and that I should be careful.

I kept walking and by the time I arrived at my chair, it was dark out. With some alarm, I noticed that I had left my purse sitting there with it all day, but I checked and none of its contents were missing.

Just then, a man came running by and shouted to me , "Hey, watch out! There's some masked weirdo wandering around. He's a nightcrawler and he wants to play 'charade de sherray!"

"What's charade de sherray?" I asked him.

"Look it up if you want, but I'm not sticking around here to explain it to you!" he shouted and kept running.

His urgency was enough to convince me to take him seriously. I grabbed my purse and chair and started running, too.

I woke up then, so now I'll never know what charade de sherray was.

@MLE_online not spelled right, but phonetically it is French and means “my dear's little game” or “sweetheart’s charade”.
@tomacorp It wasn't pronounced like cherie though. It was pronounced like shirr-AY