“Scratch me and you get grief. It will well up surreptitiously and slip away down any declivity, perhaps undermining the foundations but keeping a low profile and trying not to inconvenience anybody. Scratch my sister at your peril however, because you’ll get rage, a geyser of it, like hitting oil after drilling dry, hot rock for months and it suddenly, shockingly, plumes up into the sky, black and viscous, coating everything as it falls to earth. Take care when you scratch.”
Book:The Erratics