This expression is not used much these days, but
it is interesting to know the history. It means tears or
expressions of sorrow that are insincere.
It originated from a 14th century, a book called “The Travels of
Sir John Mandeville” where the author recounts a knight’s
adventures through Asia. In the book it says that crocodiles
shed tears while eating a man they captured. Even though it is
factually inaccurate, the phrase ‘crocodile tears’ found its way
into Shakespeare’s work and became an idiom in the 16th century,
symbolizing insincere grief.