I have noticed this as a recurrent theme among mothers of teenage daughters. “Wait, didn’t you used to be a teenager?” I asked a coworker after a complaint session. “Yes, but I wasn’t evil,” she replied somewhat tensely. Later she stopped at my desk. “Okay, I checked with my mom, and apparently I was evil at [daughter’s] age. I asked what I could do about it, and she just laughed and said, ‘Karma’s a bitch, kiddo!’”