A precisely aimed insult often hits home with far greater impact than a generic catch-all slur+.
Although “retard” is both satisfying and functional in conveying the sense of mental deficiency when describing a fellow citizen of the cube farm, it’s always been a little bit too vague for my liking. This is probably why I’ve taken to using more accurate terms:
An idiot has a mental age of about two and possesses no capacity for empathy whatsoever. Idiots are extremely demanding and require help for basic tasks like eating, bottom-wiping and project planning. Basically, idiocy is a compulsory prerequisite for senior management;
Your average imbecile, however, has a mental age of between 2 and 8 and is able to follow simple instructions, but requires constant supervision and is typically incapable of initiative or independent thought;
And finally, a moron has a mental age of between 8 and 12 and is able to function with a reasonable degree of independence. Nonetheless, morons generally fail to develop the necessary social skills to fit into a normal society. Most of them end up on the internet proving Godwin’s Law over and over and over again.
+ The one exception to this rule (in South Africa and most of south London, for that matter) is “doos”. It is essentially the Chuck Norris of insults.