'I couldn't care less': Did Trump explain why he calls Harris 'Kamabla'?

Former president Donald Trump has been referring to Kamala Harris as 'Kamabla' -- a term which has no explained meaning. There are speculations that it is a willful distortion of Kamala's name to incorporate Black in it, or that Trump has been suggesting that 'Kamala Harris is blah'. But there has been no explanation given until Trump addressed his habit of 'bad name calling'. At the rally, Trump said he has frequently mispronounced Kamala Harris' name but he couldn't care less how it should be pronounced.