It was his first Discworld book, the later ones get a million times better, and funnier.
Read 'The Colour of Magic' by Terry Pratchett about 20 years ago and thought it was absolute crap. In the intervening period he'd clearly produced a lot more work, and many people seemed to like it, so when I was on holiday and saw a second hand copy going cheap I thought I'd give it a second chance.
Got 75 pages in and realised I'd been right the first time.
Pratchett seemed to think that 'wacky = funny', and he was about as wrong as wrong could be.
It sucked like an industrial vacuum cleaner.