Now let's be very clear...

Casually glancing up at The Boy’s bedroom window while deep in conversation I happened to spy a naked form flitting about on the window sill.
It took me a while to work out just what was going on and a few moments more before I was pelting round to the front door diving up the stairs charging into his room.
Me: “Just what the heck are you up to?!”
Although somewhat startled by my sudden appearance, The Boy looks at me as if I am extremely stupid. His expression becomes pitying.
Him: “Playing Mermaids.”
Right, silly me of course naked boys jumping off window sills -obvious isn’t it. We’re at the bottom of the sea and we’re mermaids.
Him: “I told you that’s what I would be doing.”
I remember something along the lines of I’m-going-upstairs-and-changing-into-home-clothes not I’m-going upstairs-stripping-off-all-my-clothes-climbing-on-window-sills-and-half-scaring-my-mum-to-death. I start to tell him this then I recall him saying to me he was going to play mermaids. I stand there with my mouth half open and my finger raised ready to admonish him. Nope I can’t I was so busy just doing things I probably zoned out on him as he was talking.
Him: “Mum?”
I focus.
Me: “Right. Well, playing mermaids is all well and good but jumping off the window sill is verboten. Now get dressed.”
Him: “But mermaids don’t wear clothes!”
Me: “This one does – now get a move on.”
Him: “Can I still play mermaids?”
Me: “Now let's be very clear about this you may but only if you’re dressed and no jumping off the window sill.”
I leave him to his imagination and return downstairs. Just as I sit down to have a cup of tea there is an almighty bang and thump from upstairs. I bolt back up prepared to do battler but before I speak, he interrupts.
Him: “I’m not jumping off the window sill, I’m using the desk…!!!”