Mouthology

A professor was traveling by boat. On his way he asked the sailor:

“Do you know Biology, Ecology, Zoology, Geography, Physiology?

The sailor said no to all his questions.

Professor: What the hell do you know on earth? You will die of illiteracy.

After a while the boat started sinking. The sailor asked the Professor, do you know swiminology & escapology from sharkology?

The professor said no.

Sailor: “Well, sharkology & crocodilogy will eat your assology, headology & you will dieology because of your mouthology.