Welcome, minion. You have accessed the controls for the most powerful laughing machine in the world. With these dials and switches, you will be able to unleash a cacophony of evil chuckles, maniacal cackles, and diabolical guffaws.
Please note that self-destructing the Doomsday Machine will result in your immediate termination, along with everyone else in the world. Proceed with caution.
Disclaimer: Not responsible for the consequences of using this machine.