The Promised Joke
Once upon a time, one of those PC types (as only cretins refer to those who aren't knee-jerk Colonel Blimp types) was very proud because his son had passed through Primary School and gone on to Secondary School where they teach proper subjects like History and Geography instead of fingerpainting and self-esteem.
"So, Sebastian", said the PC Type, "How was your first day at the Big School"? (Patronising as well as PC, you see)
"It was great Dad", said Sebastian, clearly too downtrodden to complain when his father talks down to him.
"What was your favourite lesson then?"
"Oh biology, definitely, that was fantastic."
"Really, that's interesting. What did you do in Biology?"
"We dissected a guinea pig".
The PC type went as white as the sheet on a Ku Klux Klansman and, looking shocked, said. "Oh for goodness sake Sebastian. Didn't I bring you up to be politically correct at all times? Can't you remember, we don't call people "Guineas", they're Italians."