Dennis, are you off of your meds again? I worry about ANYONE who considers a Nambu to be "cool"!!
Ross, cool to me is what catches your eye and the eye of others. What people like to see when you're at the range.
Each month we have a gun show and tell at my club's monthly meeting. I bring 2-3 pieces I have each month. You should see the attention that the Nambu got. Everyone thought it was way cool.
The one that got the most cool votes was one that I forgot to post. It was passed around and talked about for a long time. Cool isn't always tacticool or blingy, it's what draws attention. This one really did: