My worst (and recurring) nightmare is me being locked in a sleep paralysis like state with a bright beam of light ripping me upwards out of bed. With startling sudden-ness I end up on an examining table surrounded by grey aliens who dissect me while I am awake and fully capable of feeling pain. Sometimes they just stir around my insides. Other times I feel them ruthlessly rip organs out. Once they cut my skull open and I felt them pull out my brain and replace it. I can now sometimes become lucid during these dreams. But even lucidity doesn't always save me. Occasionally I can will myself out of the paralysis by using all the hatred and murderous rage I can muster. In those instances I sometimes I get to attack my tormentors. But usually I'll simple wake up after I break the paralysis.