What are they dreaming of?

I considered including a thought bubble, but then I decided that this would be to much of an invasion of privacy. Everyone should be allowed to keep their wet dreams to themselves.

Comic transcript

Panel 1:
CAUTION WET FLOOR
Panel 2:
CAUTION WET CEILING
Panel 3:
CAUTION WET SIGN
Panel 4:
CAUTION WET GUY
Panel 5:
CAUTION WET DREAMS