She hadn’t got a very good look at Lucas’s, drunk and on a couch in a dimly lit living room. He’d had it out, fumbling with the condoms, but she hadn’t exactly tried to help. She knows the basics of human anatomy, but she’s never seen another one close-up, in person. But Malfoy is tall, much taller than she is. Taller than most of the male Hogwarts contingent and she wonders if that really does affect anything.