I forgot

And this was important. Neil & I studied rocks in the lab yesterday, and I KNOW THEM!!! That's right, I have memorized all applicable sedimentary & metamorphic rocks for my exam on Monday. The only ones that are still causing me trouble are:

slate: red & smooth; when you "slate" your throat you bleed & blood is red
shale: it has "shelves"; Neil says "if you dont know shale, you'll fail"

I shant fail. I shall make the highest grade in the whoooole class!