Epic non-prank:
I don't know if you remember, but on March 31 / April 1, 1997 there was an epic storm. And I basically refused to believe it because I was convinced it was the world's biggest April Fool's Day prank.
It hadn't snowed for like a month, it was fairly warm, we had just wrapped up a week of spring break, and everyone's all "we're getting three and a half feet of snow tomorrow."
FAKE NEWS