Can God do anything?

Most people believe that God can do anything. Dr. Zakir Naik explains in this clip:

Why are you restricting the powers of Almighty God. For the sake of argument, we’ll agree that God can do anything and everything and He can become a human being. You must realize that once God becomes a human being, he ceases being a god. By definition God is immortal and human is mortal. You cannot have a person who is immortal and mortal.

Brilliant. Allahu akbar.