During her teenage years, Kay learned a lot through trial and error. A few of these things became rules that she has kept throughout her life.
Things like:
Never drink grapefruit juice after brushing your teeth.
Don't superglue yourself to another person.
Don't drink beer, eat ice cream, and then ride a tilt-a-whirl.
All of those types of things were dumb enough for me to sit back and watch without feeling the need to intervene. But once in a while, when I saw a train wreck coming, I did need to swoop in.