Don’t use no double negatives, they say.
In fact, you shouldn’t never use no triple negatives.
But the AP Statistics review book I have tops them all with this following sentence:
There are two types of possible errors: the error of mistakenly rejecting a true null hypothesis and the error of mistakenly failing to reject a false null hypothesis.
(Barron’s AP Statistics, 5th Edition, page 356, referring to false positives and false negatives.)
By the way, today was the AP Statistics test. I wasn’t enrolled in the course, but I think I did just fine on it.