WOW! This is insane. A 17-year old Irish schoolboy had a heart attack after his testicles were squeezed in a prank that went horribly wrong. He has been placed in a medically induced coma, following the incident.

The pupil was heading back into school after a lunch break and joking around with a group of boys. According to the Irish Mirror, one of his friends then "jerked his scrotum," causing the emergency.

A teacher and one of the group performed CPR at the scene while waiting for the emergency services to arrive. He is now in stable condition.