You don't ever want your offspring knowing you've done anything remotely fun, interesting or even mildly risque before they came along - and certainly not before they're over the age of consent themselves. Otherwise you're giving them carte blanche to try and out-do you.
Sam Cam, who has always had that mildly exciting whiff of rock chick about her, takes a far more laid-back approach. She's been quoted as saying she wouldn't mind if any of her children came home with a tattoo. Then again, she's hardly in a position to say otherwise.
I'm the mother of three daughters. Two are now through the rebellious phase and so are privy to the odd bit of toned-down scandal from their parents' past.
But these stories come out after dark, when their eight-year-old sister is tucked up in bed, and they're under instructions to keep schtum. I must keep the slate clean for when she hits her teens. Mostly, throughout our children's lives, my husband and I have nurtured their view of us as being "boring fun suckers". (The fact that, even at their most unruly, they didn't come close to matching what their father and I got up to, has been a private joke that got us through the tougher days of parenthood.)
So, we've feigned shock and dismay as they regaled us with stories of under-age drinking and drunkenness and general teenage bravado while quietly thinking: "Is that it? Hallelujah!" The words "those lyrics are disgusting - turn it off, now" have rung through our home more times than I care to remember. My daughters don't need to know that back in the day I was a fan of a band called the Violent Femmes, who could give that Skepta chap a run for his money.
Of course, I understand why some people settle on Option 1. When your sulky offspring shout that the only reason you want them to spend a couple of nights in each week is because you don't have the first idea how to have fun yourself, it's tempting to fire back a "Let me tell you about the time..." counterblast that blows that attitude to smithereens. And I would, occasionally, like my girls to think their mother was, once upon a time, actually rather cool.
But it's too high a price to pay; let the facade of boring matriarch slip and you've given them ammunition that they'll use on you at a later date.
And make sure you keep the grandparents on side. Countless times I've had to glare meaningfully across the dinner table at my parents or my in-laws when, as we've berated their grandchildren, they've started to snort in derision and one just knows that, "Oh come off it, you did much worse," is about to fall from their lips.
Personally, if your kids think you were born boring then pat yourself on the back because, as far as parenting them goes, you are doing a marvellous job.