A leech is a useful insect,
And good for medical treatment at that,
A mosquito is not,
And a pest at that.
                              
A cat is expensive when it is Siamese,
And pampered at that,
A stray is worthless,
And dirty at that.
 
A diamond is picked out of so many,
Which are also diamonds similarly,
But because they are the wrong shape an... continue reading