....the sixth form biologists and gave me a card.
It said that they thanked me for teaching them, that they were about to diffuse all over the UK, carrying out allopatric speciation, but there would always be a place for me in their right atria. They pointed out that the card had a large surface area to volume ratio and had been made from sustainable forests that had been coppiced and pollarded.
Fair brought a tear to my eye!
At least I taught the little buggers something