If you were watching Saturday Night Live between 1991 and 1998, you probably noted the "Deep Thoughts" segments: brief absurdist jokes narrated by Phil Hartman, always identified as "by Jack Handey". Handey was, and is, a real person, and he wrote a book, and I bought it (heavily remaindered).
The book's first-person narrator is very much the "Deep Thoughts" guy. His real name is not revealed, because he decides to go by the nickname "Wrong Way Slurps". We learn a bit more about him: specifically, he's an extremely stupid, lazy sociopath. His friend Don invites him on a trip to Honolulu, a smelly tropical hellhole full of hostile natives, evil scientists, and scam artists. At least that's the way it appears to Slurps.
He and Don are sold a treasure map said to lead to the mythical "Golden Monkey". Since neither one is that sharp, they decide to head up Hawaii's "mighty Paloonga River" to rip off the fabled riches. Things don't work out exactly as planned.
Now: the book is essentially a bunch of absurdist one-liners linked together by an equally absurd plot. Even if you liked "Deep Thoughts", stringing them out into an entire book (albeit a short one) might not be your cup of tea. I chuckled all the way through, but I didn't try to read it all at once.