Explosive Skulls

[Nnystyxx]

There needs to be a mutation that turns your skeleton into erebite. Or plutonium or other dangerously stupid materials.

And then someone makes it into an injector and thinks it would be 'funny' to jab Sudden Radiation Explosion Disease into any random person who's stunned or briefly looking away.

Which it would be, except in this case they're not a traitor and just a jerk.