That's a pity. It's from Brass Eye (https://en.wikipedia.org/wiki/Brass_Eye), a piss-take on panicky documentaries, it's the drugs one and totally brilliant. And they got a mandrill on it.
Most of them are well worth a watch, get them if you can.
I could not watch the video, but from Urban Dictionary, this is a basis for a brilliant prank: ... there is an elaborate verbal dance that you need to go through with them as they pretend not to know what you are talking about, but perseverance is the key here.
Weird. Mormons getting salty?