I have just written the rule below on a large piece of paper and stuck it to the fridge...the only place I can be sure the aforementioned teenagers will visit today (apart from their beds of course, but once something enters the twilight zone that is the teenage bedroom, you can't be sure it'll ever be seen again).
"Before you were born, your parents weren't as boring as they are now. They got that way from paying the bills, washing your clothes and listening to you talk about how cool you are. So before you save the rainforest from the parasites of your parents' generation, try cleaning your own room!"
A slight variation on the original Bill Gates quote, but it still fits.
And what brought this on?
Hearing a newly and lovingly decorated room laughingly described as a 'floor-drobe' by an 18 year old modern day version of Miss Haversham, who systematically removes every single mug from the kitchen cupboard before locking her door so you can't get them back.
Having a recently restocked fridge devoured in one sitting by a swarm of invading Pac-men.
Remember that game Hungry Hungry Hippo, well I have the real life version camped in my front room as we speak, except the Hungry Hungry Teenage Boys don't stop chomping once the marbles have all disappeared.
Actually, I haven't seen the cat in a while...
Edit: Just been brought a cup of tea and 2 slices of gluten free cardboard slathered in Boysenberry jam by the aforementioned teens...and I didn't have to ask, so am feeling nurturing, maternal and blinded by love...at least until the tea's all gone