Then Nanshu (Saigo) gave Kawaguchi a gago (pseudonym) of 'Suimin-sensei' (睡眠先生, literally, 'Mr. Sleep'), however Kawaguchi changed it to 'Suimin-sensei' (酔眠先生, literally, 'Mr. Drunk and Sleep') saying he preferred it although they had the same pronunciation.
それで南州が＜睡眠先生＞と雅号を贈ったところ、同じスイミンなら＜酔眠先生＞がいいですよと改めた。