Nightmare Face by @LostAgness (LN Wulf)

I fell asleep in my high school health class, started dreaming about running up a massive column of spiral stone steps when I heard this horrible screeching from behind me so I turned to see this disembodied monstrosity fly up into my face! I cried out in terror waking up instantly and finding myself in the middle of a freaked out class. Once I sat bolt upright with embarrassment the class began to laugh. I explained the dream and they continued to laugh until my (chuckling) teacher continued on with the lesson. I still remember the horrible sound it made and it has been nearly twenty years since then.