غلام زنجباري ... طلع تفتيحة !!

An American tourist asked a boat guy in Zanzibar
Do you know Biology, Psychology, Geography, Geology or Criminology
The boat guy said
No. I don't know any of these
The tourist then said
What the hell do you know on the face of this Earth? You will die of illiteracy
The boat guy said nothing..
After a while the boat developed a fault and started sinking
The boatman then asked the tourist
Do you know Swimology and Escapology from Crocodiology
The tourist said:
No
The boat guy replied
Well
today you will Drownology and Crocodiology will eat your Assology