Why I have a stiff neck

Get your mind out of the gutter
  1. I slept funny
    But I did not laugh
  2. I don't get enough exercise
    I said, get your mind out of the gutter.
  3. My dog reigns supreme when sleeping.
    Usually in the middle of my King size bed
  4. I didn't drink enough
    This one can be interpreted. But keep your mind out of the gutter
  5. I turned my neck too hard
    But it was worth it
  6. I spend too much time on my phone
    . . .