Who Got Rid of Angus Flint?
is a short book for children. It is also known as The Fearsome Friend
How do you get rid of a guest who picks you up by the hair, won't let you play the piano, watch television or shut the window? Candida and her family try everything - they poison his stew and litter the house with roller-skates in the hope that he will fall over them - but nothing makes him leave...
(Diana Wynne Jones has said that [Angus Flint]? was based on a real person with whom she and her family were inflicted; unfortunately, in real life nobody was able to get rid of him, and they had to wait for him to go away of his own accord.)
It has been published individually, and as part of the anthologies Stopping for a Spell and Vile Visitors.