something liked my sheet...

It was a hot summer night, and I was six years old. I was in bed and only had the sheet on because my room was warm. I was rolling over and came awake momentarily, when suddenly the sheet.. had been yanked off of me.. but only a couple inches.. Just a quick jerk. I remember feeling confused... maybe a tad bit threatened.. but I was able to fall back asleep... playful ghost, perhaps?