Challenge the optic nerve!

Baxter: [explaining the rules to everybody] Okay. Listen up, gang. On your ankle, you all have a rig packed with twenty ounces of plastic explosive. Twenty ounces. That's enough to incinerate you, your dog... and the small house you may be residing in at the time. In exactly thirty hours from now, that plastic explosive will do what it does best. You want that rig removed from your ankle, simply be the sole survivor in thirty hours from now. There are two other ways to detonate an ankle rig. One: You see that red pull tab? Yank on that, and after a ten-second delay, boom. Two: Tamper with the rig, you mess with the wires, you try and pick the lock, instantly, without delay... boom. It's a very simple game. Kill... or die.