What is the definition of Naples Weapon?

A 'Naples weapon' is like a ridiculous, yet strangely effective, weapon of mass tranquilizer that only works in the context of a nap. Imagine this: "After a particularly grueling day of dodging tourists in Naples, the city's mayor decided to deploy the Naples weapon to keep the tourists from wandering off in search of pizza." It's a pun on 'tranquilizer' and 'Naples,' and it's certainly not a weapon you'd want to take seriously in real life!