I remember reading a story in SI about Rex Chapman when he was at Kentucky. He was quoted as saying, "My bad" in the article. Oh, damn. Thanks to my incredible memory and the powers of the Internetz... behold: http://sportsillustrated.cnn.com/vault/article/magazine/MAG1127111/2/index.htm From the March 28, 1988 article. In other words: evidence of Bol coining it in 1989 is worthless. Ed O.
Better yet.. http://www.phrases.org.uk/meanings/my-bad.html http://en.wikipedia.org/wiki/Mea_culpa (beins that you're a lawyer, Ed. )