No one ever talks about what it's really like living with "yadults", because there is so much hypocrisy involved. You want them to join you around the dinner table into the small hours, but you don't necessarily want them hearing about the time you got arrested/sacked/dated twin circus jugglers. What's yours is theirs, unless you're talking about the pomegranates you were saving for the salad, or the new white towels and the comically expensive bath oil.
Anyway, here are some tips for living with yadults, which from experience, I think you'll find useful:
• It's good to have a signal. So, for example, if you have managed to keep "the arrest incident" under wraps, when your friend starts hooting about the arrest incident, you can silence them with a single look or a word.
• Triage your drink and food. Who knows how, but they have an unerring ability to separate the quality from the own-brand, and the not-opened (therefore more appealing) from the already opened, still fresh and perfectly okay. These are the five-star luxury years. They prefer Absolut to Smirnoff, fizzy water to tap, fresh pesto to bottled, papaya to braeburns. The only way you will cope is by doing a triage of your supplies. Hide the burrata behind the halloumi and operate a two-tier alcohol policy. The secret is to decant everything and a) water it down or b) make sure that they're drinking the one containing the super-plonk.