1. Video games that determine where your pupils are and slowly start to attack your eyes in the exact same spot so you go blind.
2. A weapon that burns you around your eyes when you wear sunglasses and water condenses on your skin.
3. A weapon that waits for you to have a orgasum and your muscles release then activates the spot in your brain to hold those released muscles open for an extended period of time so you start to get a large gut.
4. Secret warfare to make it so you think you forgot your password to accounts but really it is is just not possible.
5. Gangs that spray a rusting agent in your car tires.