Sliding into the DMs is a slang term used to describe the act of sending an unsolicited or unexpected direct message (DM) to someone, often with the intent of starting a personal conversation, building a connection, or even flirting.
It's most commonly used in the context of social media platforms like Instagram, Twitter, or Facebook. While it can be a playful or casual way to initiate contact, it’s often used in humorous or sometimes cringeworthy situations when someone is trying to approach another person privately, often with a romantic interest.
The phrase has become a cultural meme, often implying a bold or smooth move to get someone's attention in a private chat.