You somehow accidentally flip a switch on your motorcycle battery charger that keeps it from being able to charge. The switch changes from 6V to 12V and was supposed to be on 12V, which I know in the past it was. However, sometime recently, it got switched over to 6V. This means it was unable to charge, and therefore unable to start this morning.
This must have happened when Laura and I cleaned the garage. And clean it is, I must say! Laura has been on a cleaning frenzy this last week, so the whole house looks spotless.
Luckilly, I was able to roll-start it and get to work. I hope I can get home.