Cirrus@Austlit

'A boy is entering a flying contest; the wings that he has built are broken and his hang-glider has been stolen by the school bully (who is also entering the contest), so he relies on a cat-shaped hat that has washed ashore. This hat seems to come to life every now and then; whenever it does, it opens its eyes, and it forces whoever wears it to do whatever it sees someone else doing. The cat-shaped hat sees a bird flying and the boy flies up with it. After, the bully tries on the hat but it sees a pile of faeces and the bully ends up going towards it. Was later adapted as an episode of Round the Twist.'    (https://en.wikipedia.org/wiki/Unmentionable)