Disquieting experience
Before work, I plonk down to draw at Starbucks (it’s a bit too crowded to easily move elsewhere in the shop) and the guy at the next table is laughing. Just chuckling steadily- no guffaws or tear-upwelling uproarious laughs, just a steady chuckle for 15 minutes or so. *Not* the sort of laughing you do when you’re hugely stressed.
Like having a laugh track but those have far more variation.