I'd suggest trying to read this story right before you go to sleep. Turn out the lights, turn the volume on your computer up, and then play the video.

Geez. This so-called "nonsense machine" is called "WAHHA GO GO" and is designed for the sole purpose of approximating a creepy-ass human laugh. Rotating the disk in the machine's "gut" transfers power to the two short "arms", which expand air into the accordion-shaped lungs. As the lungs contract, air is forced through the throat and through the crazy, grinning mouth (looking not unlike those of the mass-production Evangelion units, resulting a piercing, soul-crushing cackle that chills a man down the spine. 

Hit the jump for more videos, which show others reacting to the abomination's chortling. They laugh, but their souls cry. Even their progeny will know that fear.

[Via Pink Tentacle]