First Brush With A Dementor
It's good thinking, but I'm not sure if the "temporary condition" reasoning works. When you think about it, for example your body fat is a temporary condition too, because it changes quickly when you eat or exercise or on an even more basic level, your haircut is a very temporary condition, yet you get the same haircut as the person whose polyjuice you drank. So at least they'd have to look pregnant *I think.
This completely gorgeous banner, which makes me happier than a squirrel, was made by Hokey