Kenpo Yahoo said:Why do people call you Doc? Is it because you are a Ph.D. prof. at your university or are you a medical doctor?
This is from this threadDoc said:Those who know me personally began calling me that when I received my Ph.D. 6 years ago. It stuck.
http://www.martialtalk.com/forum/showthread.php?t=24180&page=1&pp=15