You show any household lightbulb to the spectator (they can even supply it!). You then put it up to your mouth and it illuminates! You don't even have to put it in your mouth, it'll light up in your hand!
The spectator can then fully examine the bulb, check your hands and look up your sleeves!

- Works with ANY bulb!
- NO wires!
- NO dangerous high voltages!
- NO electrical connections!
- 100% safe and easy to do!
- Can be performed instantly, time and time again!