Today in the Word, January 13, 1997, p. 20
Russian Czar Peter the Great was fascinated with the study and practice of medicine. So when one of the Czar's valets asked the monarch to pull his wife's tooth, Peter grabbed his dental instruments and followed the valet to his apartment. There Peter pulled the woman's tooth, ignoring her cries of protest.
Only several days later did Peter learn that the woman had never had a toothache at all. The painful extraction was her husband's revenge for a domestic quarrel. Talk about "tooth for tooth"!