A sunny day. A lunch time bike outing and late afternoon of committee meetings.
I am not a committee person.
Bugger! Get to the cycle security centre to find a puncture. Managed to postpone the ride half an hour and fix things. Well change the inner tube.
Later inspection reveals that there's a large rupture. The rate of escape of air when I tried to pump it up was a strong clue.
Searched the tyre, no obvious sign or nasty bit of glass or nails.
Then noticed the inner tube, the valve was scarcely attached to the tube.
I keep old inner tubes in a bag in the "one day" box.
Does anyone else?