Samuel Pepys versus The Incredible Hulk

Don’t make me angry; you wouldn’t like me when I’m angry.

Or, alternatively, it is a truth universally acknowledged that those who get outraged by things on Twitter are in need of a life.

Having said that, occasionally one sees something on Twitter which is so staggeringly crass that the metaphorical shirt-ripping (but, of course, never trouser-ripping) green transformation takes place, and any pretence at possessing a life has to be laid aside. Thus it was with something that emerged at the...