There's a category I have for this sort of thing, which I don't have a good word for. The stories from the Daily WTF also generally get slotted in here. It's "crazy stuff really does sometimes happen in the real world, but you'll never be able to verify this specific story either way".

Did this specific story happen? I'll never know. But there's equally crazy stories that have happened. Not necessarily a lot, but non-zero. Much moreso for the Daily WTF; every story is obviously not pristine, unvarnished truth, but I've seen dozens of people pile on to how impossible a particular story is when I've witnessed the moral equivalent in my own experience, so....

(Fortunately the truth value of this story doesn't matter.)