• You're beyond the open bedroom doors policy but still, there must be no hanging out in bedrooms with love interests. This may seem unreasonable, but even if they're in there reading poetry to each other it makes you feel like proprietors of a love motel - and no good will come of that.
• Nobody moves the charger. Not ever. Anyone who moves the charger (or allows their boyfriend/girlfriend to do so) understands that this is a straight-to-meltdown offence.
• Nobody unplugs leads at the back of the TV so that you're connected to the PS3, or someone's Spotify, with no idea how to get back to terrestrial.
• Everybody eases off on politics. Lively discussions: yes, lovely, but our (new) rule is no crashing on about elitism and the defunct capitalist model while reaching across you for the truffle oil.
• No touching the heating or hot water under any circumstances. These interventions are the most stress-inducing of the lot, as it happens, partly because it is messing with your environment; partly because it feeds our paranoia that we have raised a lot of pampered Joffreys (there is no hot water because it is 3pm!); and partly because the yadults are very good at On and Up, but not so much at Off and Down.
• Compulsory clearing up the night before. If you come down in the morning to a beggar's banquet scene, the kitchen wall might as well be graffitied with the words: "Chill, Old Types, nobody cares about your bourgeois standards."
• On that subject, it's okay, if it makes you feel much better, to say: "Stay away from my mother's glasses, please." Or: "Don't light the candles on the mantelpiece."
• They should cook. Sometimes parents of yadults shy away from this because they are rarely in the mood for chickpea fritters or pasta with cheesy meatballs, but it's an essential part of the deal. Without it, you will be raising "Entitleds".
And you're still raising, make no mistake. They're not fully baked yet.