What is the dumbest criticism you’ve received at work?

I work for a large company and yesterday we had a client meeting. My bosses boss called a meeting with me and my boss immediately after the client meeting to criticize me. Very long list of things, but the stupidest thing she had to say was that I didn’t greet the client fast enough when he joined the call. Are you joking me? Nope not a joke. This is my life.