Harry Potter slash fic recommendation

'I always knew that werewolves were lecherous perverts,' growled Snape, barely audibly, but loud enough for Lupin to hear every syllable.

Okay, I am so not into Snape/Lupin, or anyone/Lupin for that matter, but Watching His Buzz by Viv is just too damn funny and sexy, with wonderful, irascible, in-character Snape.

Highly recommended.