Shoot, I would probably react now the way you did then.
I had a momentary curiosity to google occult practices/dogs with eyebrows, but I’m not going there.....I’ll regret it if I do.
That was the way it was said to me.
If I had to guess, I would speculate they meant German/black & tan breeds who all have “eyebrows” but lacked the intellect to name them.
So, to try and lighten this morose thread, here are these
http://www.buzzfeed.com/daves4/what-would-dogs-look-like-with-eyebrows
http://www.reddit.com/r/dogswitheyebrows