Explain to me what you do without using the words "Scrum", "Agile", "Iteration" or any other agile buzzwords. How does what you do add value to the organization?
The reason I think this is important is that the whole organization may not have drank the agile Kool-Aid and it's important for the Scrum Master to liaise with the customer(s) and other areas of the business to remove impediments and keep the team productive. In order to do that the Scrum Master must be able to communicate with non-"agile" team members in their language. If they can't do this, they are probably going to cause as many road-blocks as they remove.