When I thought of Scrum Masters, I would think of people who are smooth, serious, calculated & measured in all things that they do. They are the experts in Scrum! All knowing, composed, wise, noble - without their flaws. Or at least, creating a perception that they don't make mistakes. But as time has gone on I have realised that the opposite of the above persona can also be true. And perhaps, even more helpful.
Have you considered bringing out your inner-Donkey? :)