Spilled Sin

You tell me that I am best dressed in sin,  
Then observe how the moonlight gives a sheen  
That adds to the dispersal of your cum;  
I'm not sure what it brings, but you begin  
To trace your fingers where all your obscene  
Spurted remains obscured my moon; your fun,  
Starkly exposed, until your fingering  
Ensures you gathered all your viscous cream;  
I scream in some surprise, when your spanks drum  
Indiscipline; you quickly stop the din  
(With fingers in my mouth, so you're licked clean),  
And then you spank again, both sex and bum;  
It makes such sense to you (I might have guessed!),  
Redness after such sin leaves me well-dressed.