David Feldman's book "Who put butter in butterfly?" explains the original meaning of words. The book is interesting to read as it provides some smart-ass wits. I find his style is close to Lin Hang Tse's. The following are a few examples from the book:
G.I.: G.I. stands for government issued. As the US government issues the uniforms to their soldiers, therefore G.I. is equivalent to US soldiers.
Ladybug: The bug honoured with the title Lady. The bug is considered useful to humans because it eats "bad" insects.
R (in pharmacies): It is the Latin abbreviation for recipes.
Mistress (Mrs): Mrs is the abbreviation for mistress. In the past, mistress does not mean a concubine.