(n) is a rare occurrence that happens whenever there is large some of people who are on a heavy dose of marijuana. When these groups of people are all drawn to one thing that provides some sort of pleasure at once, whether it be something soft to the touch or something entertaining to watch, they tend to mumble or moan, thus producing the Zombie Stoner Effect.
Man #1: Why are there so many people petting that dog?
Man #2: It's the Zombie Stoner Effect, it only takes one then the rest follow.
Man #1: That dog does look soft...Braaains!
Man #2: Oh Jeez! You have become one!