Crash - who turns 14 tomorrow - sleeps in a loft bed. It's annoying to get out of bed to turn off the lights once you've gotten nice and sleepy reading a book, and a parent can't always be induced to flip the switch for you.
Tonight he found a solution. A Nerf dart gun.
He's good. He gets a bullseye four out of five times - and pop, the lights go out. It is, as he would say, a mad skill.