Is Duh-dar a word? It should be. Duhdar!

In an email to M, I was trying to think of a word for the ability to detect stupidity. I can see that Dumbdar is in pretty good use. But, for some reason I don't care for it.

How about "Duh," rather than dumb? I give you --> Duhdar

So, I think I have a really well-developed duhdar. But recently I was talking with Amy about someone that I only just realized was dense. This person has an interesting personality that could be described as insincere and abrasive. This might be cynical, but I usually associate those types of personality traits with smarter people.

Honestly, most of my dumber acquaintences are less sophisticated, but usually affable. So, if you want to fly under my duhdar, just act impertinent, impudent, and impetuous. (Actually, I think those are mostly synonyms, but if you are on my duhdar, you don't know that.)

--gh