Here's one from a friend of mine,
a former smoker:
I saw him over Christmas and I hadn't seen him since I quit smoking and took up vaping. I pulled out my vape to take a hit and he had a very alarmed look on his face.
I sez, "What?"
He goes, "I was listening to John Tesh on the radio last week and he said those things are dangerous! That could blow up on you, you know!!!"
So I blurt out, very loudly, "OH NO! JOHN TESH SAID THEY'RE DANGEROUS? HE MUST BE RIGHT!!!".
For about two seconds he thought I was serious, then we both laughed.
