My apologies, I didn't express myself correctly. I know what the term means. It's the self-deprecating nature of it that got me curious. Have you ever felt unsuitable as a chess player because of your sex or skin tone? I didn't really expect you to say so, but I thought the possibility might exist; that you have somehow been excluded from chess by those factors, which could have made you internalise the term "patzer".
Of course, my armchair internet psychonanalysis was completely wrong, which makes me glad, and I feel humbled by you. :-)