Okay, but yours did work. Peter's seems to still be working a little, and there is something about Lily's. Mine was an utter failure.
Other than you being a dog, why is it still working? I am actually a werewolf, by your logic mine should still work too.
[...]
Except everyone else has a more personal connection to what they used. I just found some last minute toy. But Peter's was a gift. Lily made hers. And if we're being honest, and I am always honest, you love being Padfoot perhaps more than is actually healthy.