If its a person I'll have them go through the whole 10 yards about the object, then I'll tell them I'm only 15 or something. When they ask for my mom or dad, I'll tell them to hold on and hang up.

You guys need to check this audio clip out. This guy knows how to do it!

http://www.ebaumsworld.com/2006/10/tom-mabe-telemarketer.html

He has a cd out with a bunch of these on it apperatly.