If you see a walnut on a muffin, what do you assume the flavor is?

I bought an unlabeled muffin today. I couldn't tell if the one with the crumb was blueberry or cranberry, so I grabbed the one with the walnuts on it thinking it was either banana or maple. I could've asked, but what's the fun in that? *(note: if you have allergies, it's more fun to ask!) I kind of wanted maple, but figured it was about 70-80% chance that it was banana. It was banana and it was good, even without butter.