I had to laugh. A man selling telescopic aerials attached to a plastic handle as a bomb/drugs detector has been jailed.
They cost about a fiver to make and he was flogging them for as much as £10,000. He made £millions.
But hang on. If you were buying one or more of these things wouldn't you test them, take them apart, evaluate their efficacy?
It is not possible to jail buyers for being stupid, but there are times when it should be.