Meaning
A bright full moon with a face, usually with a wide, calm smile and eyes looking slightly to the side. The expression is famously hard to read: friendly, smug or a little eerie.
People use it for cheeky innocence, awkward grins and jokes that are a bit too pleased with themselves: “Me pretending I didn’t see the group chat 🌝” It is often paired with 🌚 to show a bright side and a dark side.