The for obvious reasons cracks me up. I had this image of Neville, poor thing, getting The Talk from Augusta - that should be enough to make anyone's sexuality hazy. And if she knew what the Remembrall was used for *g*
Crabbe/Goyle is definitely not a sexy thought, but you managed to make it scorching. And you also managed to make me feel sorry for Ron. I can see him wanking in his room one day and Fred and George suddenly appearing to criticize him.