Sounds silly I know but I pushed my motorbike 3 miles home today as it stuttered to a halt when I was going to Tesco's. I thought it had broken down but when I got it home I checked the petrol tank and it was bone dry

Put a bit of petrol in and it ring-a-ding-dings nicely again

I really do feel like one of the dumbest people on the planet at the moment!
