The female equivalent to morning wood . When a female wakes up in the morning and her genitals are in an aroused state ( moist ) as if sexually excited.

Jake: (to his girlfriend) So.. this morning, just before you were awake, I decided to try fingering you in your sleep to see what would happen. Marissa :.... Okay. (blushes) Go on..Jake: Well... to my juicy surprise... (he says with a sly smile on his face) ...you had morning dew Marissa: (thinking to herself in embarrassment: I knew I shouldn't have been fantasizing about David Tennant before falling asleep last night!!)