Joke: the speaker; "I only have 10 minutes to speak, and I really don't know where to start." Audience: "Let's start from the 9th minute!"

What the speaker said is: I am a very learned person. I have too much to say, but the time given to me is too short, and I feel too embarrassed.

What the audience means is that your speech is too empty and boring. We don't want to hear it from you. Better finish it as soon as possible.

This little joke tells us: people should not feel too good about themselves. . .