Signs I am a (happy) Fred:

* My bike has a rack
* My bike has fenders
* My bike is a folder with 20" wheels and not-so-narrow tires
* I ride in Keen Commuter sandals
* I have a visor on my helmet
* I use a Take-a-Look mirror on my sunglasses
* I have a handlebar-mounted "Halt" holder
* I have an airhorn on my bike (Triple bonus score!)

But...I don't have a dork disk.