While the minimum number of bikes one should own is three, the correct number is n+1, where n is the number of bikes currently owned. This equation may also be re-written as s-1, where s is the number of bikes owned that would result in separation from your partner.

from Velominati: 

Rule #12 / The correct number of bikes to own is n+1.

Rule #65 // Maintain and respect your machine.

Bicycles must adhere to the Principle Of Silence and as such must be meticulously maintained. No squeaks, creaks, or chain noise allowed. Only the soothing hum of your tires upon the tarmac and the rhythm of your breathing may be audible when riding. When riding the Pave, the sound of chain slap is acceptable. The Principle of Silence can be extended to say that if you are suffering such that your breathing begins to adversely effect the enjoyment of the other riders in the bunch, you are to summarily sit up and allow yourself to be dropped.