I joined a meeting early and hear my boss talking shit about me. What Should I do?

I'm usually one of the last people to join a small daily-stand up in our small team of 5. Yesterday I joined before everyone because of issues with my camera.

After a couple people and my boss joined they started joking about a previous project and my name came up. Followed by my coworkers and boss ridiculing me for being a "a fucking moron" and also called me a "waste of resources."

I joined the meeting from a separate account later so they all still don't know i listened to them talk about me. What should I do about this? Should I just keep quiet?

Need advice