His disease is spreading.

One of the traps in the new Saw movie (yes, I'm talking about that again) is a sortofa kinda hat. More like a headpiece, really, which is also attached to the wearer's cheek by way of a sensor.

It works on its intended "victim" by driving a metal spike into the back of their skull, should they fail to smile broadly enough.

Oh, okay, yes, I'm lying.

That's not actually a Jigsaw trap.

It's real.