The bizarre incident began at about 10 a.m. on April 24, when a school official called Esteban Palafox, 34, at his store, Mexico Azteca II in Tomp- kinsville, telling him that 10-year-old Esteban Jr. had not shown up for classes for three days, the elder Palafox told The Post. Enraged, Palafox began searching for his son and found him inside their apartment above the deli at 7 Corson Ave. After he shouted at the boy, Palafox went down to the deli to retrieve the dried beef, cops said. He then returned to his apartment and repeatedly whacked the boy's thigh...