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Perfect 10
(beehaw.org)
[Image description: text which says "You're a 10 but it's on the pH scale". Underneath is a picture of a woman whose face suggests she is dropping hard truths. OP has since learned that this is a character from a show saying "You're basic" and that the post is accidentally self-referential]
Loved the episode where she drops it as a hard truth on her mom. "No mom, YA basic"
My favorite version was when Michael used it: "It's a human insult. It's devastating. You're devastated right now."
When reverse image searching the OP, the version of this tweetmeme that it found had used that line