Why are some people so hypocritical and underhand?

HONEY,,I THINK ITS ALL APART O F GROWING UP,,SOME KIDS CAN BE CRUEL,,SOME CAN BE VERY NICE,,BUT ITS KARMA,,U NO WHAT GOES AROUND COMES AROUND,,,NOW THERE WANTING YOU,,BUT NOW U GET TO CHOOSE,,,,,,,HAVE FUN,,INJOY,,N CHOOSE WISELY,,,,,,LOL,,,,,,PEACE