Disclaimer: I want to own Harry Potter and I've tried everything and yet... I still can't own it!

I am not allowed to Accio the clothing of any person while they are wearing it.

I will not greet Professor McGonagall with "What's new, pussycat?"

"He does not."

"Of course he does."

It was obvious that Lupin was the kind of person to have a tattoo, I just had to find a way to prove it.

The next day that we were outside we saw Professor's Lupin and McGonagall walking on the grounds, talking. I thought of this as the perfect way to prove my point to my friends.

So, without really thinking this through, I took out my wand and "Accio Professor's clothing!" and their clothing came sailing to me. I let them drop to the ground and, without skipping a beat, looked at McGonagall and asked "Hey, what's new, pussycat?"

I guess I don't have to say that I got detention but at least now we know that it's not Lupin who has a tattoo!