In Medieval times, France was regularly blighted by Guivre, enormous sea dragons, which inhabited woodlands and rivers as well as other places of that sort. Many serpant dragons were infamous for their poisanous breath, which in just one breath could poison anything, and were the cause for disease and despair in many parts of France. Finally one warm after noon a young farmer, hot and tired from a long day of work, stripped of clothes a plunged into the cool river of the village. after being refreshed, the farmer got out and started to dry himself when a large guivre slithered out of the bushes. The farmer was frozen with fright and waited for the Guivre to devour him. The Guivre raised itself in preparation to strike him when it saw his muscular naked body. The monster seemed to blush as it recoiled. It frantically tried to divert its eyes away from the farmer's naked body. In seconds it had dissapeared. Others soon realized that a Guivre would not attack a naked man out of fright.this lead to the Guivre's eventual extinction.
Adapted from Dragons: A Naturaul History by Dr. Karl Shuker