A teacher has a class of around thirty seven year old kids and she's teaching them about the five senses.  "Some people don't have the use of all five senses" she says.  "Take blind people, for example.  They don't have the use of their sight, so the other four senses have to become stronger to overcompensate."  She then proceeds to explain that for one lesson each day they'll be blindfolded and expected to use one of their other senses to identify objects.  On the first day she does the hearing test.  The kids easily identify a recording of sounds, such as a dog barking, a motorbike at full throttle, the sound of somebody cutting wood with a handsaw, and a whole host of other sounds without any trouble.

The following day the kids come into class and are blindfolded again for the second senses lesson, during which they're asked to identify things by smell.  The kids all correctly identify a variety of different smells.  The next day they're blindfolded for that day's senses lesson and are asked to identify things by touch.  All of the kids in the class make light work of it, identifying a vast array of objects without making a single mistake.

On the fourth day the kids are all blindfolded again for that day's senses lesson and are told that they're going to have to identify things by taste.  The teacher hands out a variety of different flavours of boiled sweets, one flavour at a time, and to start with things go well, with the kids easily identifying a wide variety of tastes, such as orange, lemon, orange, mint, strawberry and blackcurrant.  However, when the teacher gives the kids a honey flavoured sweet none of the kids volunteer an answer.  She initially suspects that they're just mucking around, but it soon becomes apparent that they're all genuinely stumped as to what the taste is.

"Come on, kids" says the teacher. "I'll give you a clue and you see if you can guess the answer.  It's made of and tastes like something that you probably hear your mummy and daddy calling each other all the time."

And with that one of the kids immediately gobbed the sweet out of his mouth and cried "Aaarrrrrgggh, Christ - they're arseholes!"