Meaning
Two exclamation marks side by side, usually in bold red, combined into one symbol for double emphasis. It means strong surprise, excitement or urgency, louder than a single mark.
Use it for big news, urgent reminders and shouty excitement: “Deadline moved to TODAY‼️” Shops add it to flash-sale posts, and friends to gossip they cannot wait to share. Too many in a row can feel like yelling, so one is usually enough.