Wikipedia
Joysprick
Joysprick: An Introduction to the Language of James Joyce is a work of literary criticism by Anthony Burgess. It was first published in 1973.
The book is aimed at helping readers new to Joyce to appreciate his genius, and is a particularly useful guide through the complexities of Finnegans Wake.
Burgess provided the following explanation of the book's title: "Any reader of Finnegans Wake will see that it is a fusion of Joycesprach, joystick, the prick that brings joy and the prick of conscience or agenbite of inwit."