A Rat Made of Diamonds

The human mind is capable of making many things appear real. For example, this elderly lady who:

I continue to be grateful that the majority of my perceptions continue to be shared by those around me, such as, for example, the fact that there is a nest of rats in our compost heap and that I, and our farmer neighbour, can at least attest to the fact that (a) they aren’t made of diamonds and (b) so far we have trapped nine of the buggers.