Stands for "All Politicians Are Bastards". A derivative of ACAB (All Cops Are Bastards). APAB is primarily used by those who cannot identify with any current, and perhaps former, politicians due to the fact that they are all bastards.
Angab the bawg homie is the signature phrase popularized by gokulakannan in the popular game, GGA. He often uses it in parallel with some of his other dialect, such as "angabrangabron dab".