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To slip along the surface of something and fall off. All of the toppings slid off my ice cream sundae before I could take a single bite! Be careful, or that stack of books will slide right off the table.
slide into (one's)/the DMs
slang To successfully flirt with someone via direct message (DM) on social media. If you're trying to slide into your crush's DMs, don't use a cheesy pick-up line. A: "I just slid into the DMs and asked her out on a date." B: "Wow, I can't believe that actually worked!"