I actually recall my mother doing this a lot, she switched from saying I was “overtired” and “needed a nap” until the day I got my period and then, condescendingly, I was “hormonal” whenever I’d disagree with her controlling or overbearing, critical relentless comments - I’m certain she’s been revving up to menopausal since my mid-30’s!
It’s just a way of mentioning a very personal, crotch-related fact of life that you’re damned if you bother engaging on…it’s like having a rational discussion with someone who’s scientific argument is “Jesus says it and that’s good enough for me!”