My children haven't had nightmares for a long time, so I think I was due for some nighttime disturbances.
I heard Weston upstairs whimpering and went to see what was wrong. He was standing at the top of the stairs, with a very concerned look on his face. When I asked him what was wrong, this is what he said...
"I had a bad thinking. I was thinking and it was very bad."
"What was your bad thinking about, Weston?"
"I was thinking about what would happen if you put a mouse in the toilet and then when I went potty late at night, the mouse would try to bite my butt and I would try to get away, but it would chase me."
Either, he has some very disturbed going-to-sleep-thoughts, or he has some VERY creative methods of avoiding sleep altogether.