Popular Scottish children song about how you can’t mistreat your ma’s ma because she’s your ma’s ma, of course, but your da’s ma is fair game because she’s yer da’s ma, always found this interesting
an insight into the worst dangers of incest: if a family were to inbreed to the point of having a grannie who was both ma’s ma and da’s ma, the convergence of that grannie deserving both good and evil would create a moral singularity that could warp the whole universe’s fabric of ethics
