I think COT is indicating in asking "what is a Buddhist", what defines a the Buddhist belief? Or more to the point what is the goal of a Buddhist? Otherwise we find a dialogue that goes like this: Q. So what is a Thing-a-ma-gig? A. Good question! A Thing-a-ma-giger is he who believes in and follows the teachings of Thing-a-ma-gigism? As in any Thing-a-ma-gig construct, there are those who identify themselves as Thing-a-ma-gingers, but actually don't really follow the Thing-a-ma-gigism.