A politician who didn't speak well asked his friend for advice.

His
friend said, "You should start with a question.... like, 'Why are we all
here?'"

The politician tried out the idea before various audiences,and it went
well.... until he somehow got persuaded to speak to the inmates of an
insane asylum.

He began in his usual way, "Why are we all here?"

Quick as a flash came back a reply from a voice in the audience:
"Because we aren't all there."