I have read a remarkable document in the Archives Nationales in Paris that when a particular French princess was guillotined, the executioner untied the body from the plank, and the body promptly jumped up, reached into the basket, picked up the severed head and threw it at the executioner. It then proceeded to jump up and down before finally collapsing into a heap about a minute later. The head was laughing the entire time, before finally fading into unconsciousness. I cannot reveal the identity of the princess, because the document was a "restricted" item for research purposes only.