Over a period of several hundreds of years a surprising number of people in medieval times certainly did, not because of hangovers but because they thought they were made of glass. Many of those afflicted with ‘glass delusion’ thought particular parts of their bodles were glass, often the buttocks so they feared sitting down, but there were variations. Some thought they were inside glass containers such as bottles for urination and the Bavarian Princess Alexandra believed that she had a glass grand piano inside her.
Perhaps the most famous example is King Charles VI of France who was also prone to psychotic fits in one of which he cut down and killed five of his own knights with his sword. The future Pope Pius II wrote that Charles had rods of iron sewn into his clothing and took all sorts of other precautions to ensure that, as he was made of glass, he wouldn’t be knocked over and broken.
Similar delusions over history occur in other forms. Rufus of Ephesus wrote in the second century AD of a man who thought he was a large piece of pottery. It has been suggested by psychiatrists that these delusions may represent a manifestation of a fear of physical contact and could also be linked to the development of new technologies, but in that case you might imagine that there would be extensive cases now of a physical fear of key boards and computer screens.