I almost did a Ph.D. Luckily, my prof and I didn't get along too well, and I escaped with just a Master's degree. To this day, my prof doesn't list me in his

I almost did a Ph.D. Luckily, my prof and I didn't get along too well, and I escaped with just a Master's degree. To this day, my prof doesn't list me in his page (all other students before and after me are listed, and the lone publication I have with him is listed too).