When a little kid shows you a drawing, do you stifle the urge to say, "What is it?" while staring at the scribbles?
Good. In this case, stifling is good. Now relax, and repeat after me, "That's great! Tell me about your picture."
More good news: The same approach works with adults. Try it. The next time someone brings you an idea you don't understand, take a deep breath, smile and say, "That's interesting. Tell me more about your idea."
Keep an open mind, and you'll be amazed at what those scribbles can lead to ...