A professor was travelling by boat.on his way,he asked the sailor "do you know Biology,ecology,zoology,geography and 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 and escapology from sharkology ? The professor said no. Sailor:well sharkology and crocodilogy will eat your assology,headologyand you will dielogy because of your mouthology.