Clean?

I opened the washing machine door to add a few more things, and find all the towels have been moved to the dryer

Me: Oh, thanks for washing the towels
Bil: I didn't
Me: Then why are they in the dryer
Bil: Oh, I thought they had been cleaned
Me: didn't you realize they were dry when you moved them?
Bil: I thought they had just been in there a really long time.