I used to have nightmares all the time when I was a kid. The worst was when a skeleton came into my room and attacked me in my bed (probably after some faithful toy turned on me, this was how many of my nightmares went). I was screaming and trying to fight the skeleton off when I saw three horrid creatures come through the door. As it turned out the skeleton was really my mom trying to wake me up and the creatures in the doorway were my brothers who had run to my room to see what was happening.
The evening early I was taking my little nap and had a dream about me and my family go out for Picnic, suddenly we got attacked by Swarms of fire ants. The nightmare end with me and my father being the survivors.
I can still feel them crawling in my skin lol.