Answer:
ang balat kayo ay nangangahulugang pagtatago ng sariling anyo upang pagtakpan ito o Hindi maisiwalat ang tunay na kaanyuan sa ibang tao.
or simply it means disguise. The persons who do it are those who are having personal identity crisis and somewhat emotional problems. But most of the time, disguises are done in intentions of making fun of someone, etc. depending upon the reason of the doer.