KATE LISTER: When you're looking back at old texts and they're talking about 'slut holes' that need clearing out, it makes us fall about laughing; but what they actually mean was like a hole that was just full of rubbish and crap in the street, that you'd put coal into and store there. And there's something that was called ‘slut wool’ as well. You know when you lift up the sofa or the bed and you call them dust bunnies now, all those balls of dust - that was ‘slut wool’ once upon a time.