April Fools' Calender

This SCP is a regular calender, however, when the date in real life is 1st of April, a random person within a certain radius of the calender will severely injure himself, just to 'show that he is in trouble'.
The victim can injure himself in many ways (plus more if provided) for example, a D-Class put his head through a moving fan and instantly died. All fans in the facility were removed. Other ways (if no easy way), the victim will bang his head continously until he loses consciousness. Tests are still going on.