SCP-4162

It’s an egg... that moves.... the same speed as you, maybe faster; but one thing’s clear, don’t get too close, else you won’t see tomorrow.

4162 is an egg that spans 3 meters in height, and after it finds his target, it will begin following them at the same speed as their targets; when close, it will cause the rapid expansion of air inside the victim’s head, causing it to explode.