If “half your age, plus seven” gets you the youngest age society will accept, then, “minus seven, times 2” should get you the oldest acceptable age.
So (18-7)*2
is 22. A mom with a 3 year-old is still a mom.
And if that doesn’t suspend your disbelief, you could still slap on “step” to the relationship label and the script writes itself.
I take a very long-winded approach. I try to find a copy of the rules online, and then read through it (which is the first thing I would do if I had gone out to buy the game).
Then, instead of watching a review, I try to find a play through video to see how it plays out. The video isn’t completely devoid of colorful commentary or random banter, but it does give me a realistic expectation of how long the game truly takes.
I generally know whether I’d appreciate a game or hate it from reading the rule book. The video just saves me the cycle of buying, trying, and returning if I’m on the fence.