UA chancellor John White testified during former basketball coach Nolan Richardson`s this morning that he used a racial slur once when he was a child. Richardson`s attorney John Walker was attempting to show that the university discriminated against Richardson. White said he used the n-word at about age four and was punished by his mother. He said he didn`t use the word again. Walker produced a pair of letters, one from state Senator Irma Hunter Brown and one that was a response from White, both in regard to a speech White made on March second before legislators. Walker said White used the phrase quote "let`s put this tar baby to rest" during his talk. The context of the comment wasn`t explained in court, but Brown wrote White to tell him she was offended. White wrote back and apologized for offending her. University attorney Phil Kaplan said the dictionary definition of "tar baby" as "a delicate situation from which one cannot extricate oneself."