Geno follow the Path
The Path is the Way
The Way is the Light
The Light is Grey
Geno believe that the true way to peace and happiness is the realization that we are one. Unity is a fundamental concept of their philosophy. Our differences, with which we try to distinguish and identify ourselves, only cause turmoil and strife. Once we realize that we are all one, hatred becomes impossible. There is no-one to hate. That is how we attain peace.
In order to become truly whole, we must shed as much as possible that which differentiates us. Thus, all Geno remove their facial hair and shave their heads. All Geno dress in simple, grey clothing. And all Geno are named 'Geno', followed by a number of usually four arbitrary digits. For example, Geno5972. This is an identification, as opposed to an identity.
That said, while the idea appeals to me at some level, I do not accept or endorse it. It may well have been invented as some kind of joke or parody. But it does make some kind of sense.
According to Voodoo Chile, it is a fictional invention of Something Awful.