'Just for your pervert of a mother, and now that our sexy little secret is out, I want you to write from a first person narrative what would happen between us if we decided to act on our mutual fantasy and ended up in bed together...'

'Mom!' Ben gasped. Tammy was suddenly looking elsewhere, having finally broken her line of sight. The crotch of Ben's shorts was visibly growing and in his exasperation he didn't even realise what she had laid eyes on. 'Are you actually serious?

'My heart is in my throat saying all of this right now. I'd really love to see you pull out all the stops...