A recent exchange between me and a non-developer, trying to explain that some Scrum Masters are better than others:

Me: "Scrum Mastering is pretty much the same as Team Leading. To find a good one you need to look at their past. They almost need a 'pedigree'."
S: "Oh, you mean Pedigree Scrum?"
Me: "Yes. They need to eat their own dogfood....."

At that point we had to temporarily abort the conversation.

OK, maybe you had to be there....