"If you want to have fun at a social gathering, step inside the personal space boundary of a friend. With some practice, you can back them up around the entire room without them even being aware of what is happening."
"The next time you get a call from a telemarketer, do not hang up. Instead, stick with them a few minutes just to hear their pitch. You will probably know pretty quickly if you are dealing with a "greenie" who is reading from a script or a seasoned professional. If it's a greenie, give them a polite "no thank you" and hang up. But stick with the pro through the entire call. Why? Because now we are going to have some fun.
In the beginning of the call, talk to them in a very quick and upbeat voice, possibly somewhat higher in pitch. If they are good, they will follow right along with you, matching your tempo and pitch. If not, they are still a greenie, operating in their own little world--end the call. But if they follow along, here comes the fun. Gradually slow down your rate of speaking and lower your voice in both volume and pitch. Guess what? The true pro will follow you all the way down. Surprised? Don't be. Just as a telemarketing pro is trained to do this (and at this point may not even be conscious of what they are doing), any good marketing person does the exact same thing."