” It’s a request for social invitation, often posted online to announce that you’re looking for something to do and to encourage others to reach out to you. In a one-on-one exchange, it’s an invitation for continued contact, meaning “text me” or “call me” or simply “let’...
Instagram’s DM feature lets you send messages to your followers and vice versa. You can use HMU in a text message to let someone know they should contact you. If you want to make it a little more sparkly, you may consider using GIFs!