Anyone who has heard of the song con-science. This also applies to the cave remix.
'What are you listening to?'
'Con-science.'
'Who's it by?'
'Muse.'
'I have all their albums, and I've never heard it. Seriously, you are an obsessive Muse fan.'
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi