"Oh Shit" moments...

Ever since a mate of mine had a bad crash because of a loose front wheel I never leave a bike unridable. If you take the spindle out, loosen the nuts, whatever, you take the wheel off too. Never leave it looking like it's ridable.

I know. O/H is suitably sheepish. Needless to say that before taking any of the bikes out in the future I will not only do the usual check of tyres and brakes, but also ensuring that the wheels don't fall off!