When I tried to ride off the rear tyre was completely flat.
I had another look. There was a razor sharp knife blade lying on the speed bump with a wicked pointy end. I’d gone over it with the front wheel, which had flicked it into the air just in time to puncture the rear tyre.
I had to repair the puncture at the roadside. Not easy, as it was the rear wheel this time. I got the patch on and it held long enough to get me to work. When I came out of work in the evening the tyre was flat. Turned out I had damaged the area around the valve when reseating the tube and putting the tyre back on. I needed to apply another two patches to the tube before it finally held pressure. Late home.
Got
fed up and bought two Armadillo tyres.