What a nit!

Younger son is convinced he has something living in his hair.

With the hair he has it could be a woolly mammoth and we wouldn't notice, but I have checked very thoroughly and can find no signs of blood-sucking predators (or mammoths).

And I know about these things: on the morning of my baptism I discovered I had nits.

I suggested that if he wants to stop insects flying into his hair and getting caught, he should cut it all off. He is reluctant to do this; I must admit that I too like his hair as it is.

Excuse me, I have to go and scratch my head.