| | Family Health | Pediatrics Is it normal for 13 year old boy to touch his 10 sisters bottom? It is not normal for a 13 year old boy to touch his 10 sisters bottom. This could be considered sexual abuse and should be reported to the authorities. Pediatrics - Related Articles Why do you want to be a sonographer? How much does a pediatric care cost? Vicks Vaporizer Safety CPR & First Aid for Children & Infants What continuing education do pediatrician need? How much money does a pediatric radiologist earn? What to classes take get into PA school?