This is really well written and funny. I loved that you mentioned the affect that Sirius' prank had on Remus. I'd never considered fact that Sirius could potentially have made Remus into a murderer when he sent Snape down the tunnel. Also there are some great images in here with Sirius and the 'ghosts'. The only thing I'm not sure about is whether the mix of humour with Sirius' distress always works. But overall, great job, I really enjoyed it.
Author's Response: If you thought this was funny, you should wait for the next chapter. Even I laughed writing it! Although, I do think it's odd how many people never realized that Sirius sending Snape down would have made Remus a murderer....Watch for the mix of humor and distress in Chapter Two. Thrilled that you liked it!