Lyric discussion by JJKelsall 

Cover art for Carcass lyrics by Siouxsie and the Banshees

SIOUXSIE: "It's a love song really. You read about how love's supposed to be, but in the papers you see all these other things that people do to get their certain kicks. More people seem to have those sort of kicks than meeting the girl next door. It's an angle of looking at things and they are there - it's not purely fictional." Source: Melody Maker 09/12/78.

So yes, as others have said it is about certain people in society who find love in unconventional ways.

Song Meaning