Cupcakes by Moonlight

[HG/SS] AU: In a world where Severus got bitten by Lupin in the Shrieking Shack incident, Snape wakes up after a full moon in a place he doesn't recognise only to find out that he's completely starkers and he's apparently in the spare room of one Hermione Granger. What the heck is going on? And why is his face covered in cream cheese frosting? [COMPLETE] Gift for thepurplewombat