Penny smiled even as she blushed. He was so timid, she hadn't expected him to ask any further questions. "My boyfriend's brother's birthday was April first. They threw him a party, complete with Cauldron Cakes. There was a lot of activity that night," she said carefully, putting special emphasis on the word activity. "They start to make you feel rather ill if you manage to resist them. I managed for some time because I was around..not the best target. I broke out into a sweat just standing there doing nothing."