Ivan on cold beds

"Dadda, you can't sleep in my bed anymore because you take away all the cold spots," Ivan told Andy a few days ago.

I totally understand.. I also don't like when I can't find a cold spot in the bed because someone else has warmed it up. Considering how Ivan likes to sleep in the cold, without ever being covered, which is something I don't understand, and always gets sweaty during the night, I really see how this is an issue for him.