Lexicon

Source: Moscow Puzzles

Problem:

A slim crocodile living in the Nile took a child. His mother begged to have

 him back. The crocodile could not only talk, but was also a great sophist

and stated, "If you guess correctly what I will do with him, I will return

 him. However, if you don't predict his fate correctly, I'll eat him."

What statement should the mother make to save her child?