The stories of «self-bumping up» against a sharp object by inadvertency appeared in the historical chronicles with a periodicity of once per each 1000 years. The victims of such accidents include, inter alia, the Persian tsar Kambik II (522 b.c), Russian tsarevich Dimitry (1591), etc. The forensic medical analysis of the self-bumping by inadvertency episodes involving the historical characters made it possible to evaluate the circumstances, specific features and mechanism of the resulting injuries, the specific features of the inflicted wounds and their outcomes.