Boss badmouthed myself and a coworker, how do I proceed?

Title says it. Myself, 2 co workers, and my boss were in a group text. The boss accidentally recorded his voice when responding and sent in the group text. He joked about my coworker making less than his wife and called me “arrogant” and said that I have a lot to learn (despite giving me a good review and responding with “nothing” when I ask him what I can do to improve. Not going to lie, I’m pretty upset about the whole ordeal. Haven’t spoken to him about it yet, as I’m out of the office. I agree I have a lot to learn (most everybody does in my opinion). But I’ve never been called arrogant before, let alone by my manager. What do I do?!?!?! Short term and long term advice would be appreciated.

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