I like it. This part:

You can send brilliant mixed messages by gently nodding while you say “No” and shaking your head when you say “Yes”.

…is quite commonly seen in politicians’ speeches.

Interviewer: “So, Mr Prime Minister – do you believe that the party is doing all it can to combat the problem of homelessness?”
PM: [shakes head] “Yes, absolutely.”

Permission to link, sir?