People think I'm nuts, or am on some kind or remote devise.  In reality, I'm reading or thinking about one of these books that make you laugh despite yourself:

Rainey by Clyde Edgerton

Fear and Loathing in Las Vegas by Hunter S. Thompson

Walk in the Woods by Bill Bryson

I'd love to hear your favorites.

I haven't read Fear and Loathing but the other two books you mention are funny, I agree. I enjoyed Walking Across Egypt by Edgerton.

I think Humphry Clinker by T Smollet is very funny.

Lucky Jim by Kingsley Amis

Walk in the Woods by Bill Bryson

OMG, just reading the title brings to mind his stories about throwing coffee filters and fear of bears.

I'm currently reading Lost in a Good Book. Jasper Fjord is a great one with puns and whimsey.

I agree with Fear and loathing, very few books bring a tear to my eye laughing so hard. Id like to Add The Hitchhikers Guide To The Galaxy by Douglas Adams.its the same kind of style almost as fear and loathing.its incredibly funny and i constantly find myself giggling like an idiot. some choice quotes.

"Would it save you a lot of time if i just went mad now?"

"Ford, your turning into a Penguin. Stop it,."

"There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened."

"It is a mistake to think you can solve any major problems just with potatoes".

I LOVED "Rainey", you don't see that book mentioned by many people. Of course it's old, now.....

Many of Carl Hiassen's books make me laugh, or at least snort.

Just finished "The Good Lord Bird". Funny when it needs to be, not funny when it doesn't need to be but never too dramatic. A great book.

Iove a funny memoir. Let's Pretend This Never Happened and Hyperbole and a Half were great.

I totally agree with the ones that I have read that were mentioned:  Jasper Fforde's Thursday Next series is fantastic as well as Douglas Adam's Hitcher's.

I would like to mention David Sedaris.  All of his books have me going back and forth from laughter to tears (except Squirrel Meets Chipmunk, which are stories told from the point-of-view of animals.  Sounds like it would be fluff, but is surprisingly heartbreaking.) They are all good, Me Talk Pretty One Day, Naked, Dress Your Family in Corduroy and Denim, When You Are Engulfed in Flames....  I haven't read his newest yet, but I look forward to it.  He also reads his own audiobooks, is frequently on the radio, and does readings all over the country.  His memoirs are collections of short stories, so you can sample him in small doses reading on youtube if you want to give him a try.  We listen to "6 to 8 Black Men" and "The Santaland Diaries" every Christmas in my house for a good laugh.

My fiance doesn't have a PBS account (because I post our books) but I know that he would add Catch 22 and Terry Pratchett's Discworld series.

http://www.youtube.com/watch?v=sdPcjIrSvcs

I second the vote for  David Sedaris on audio. HIs voice is so funny.

Also, on audio, Spencer Quinn's CHET AND BERNIE books. Chet the dog and Bernie the goofy owner/detective.

Anything by Laurie Notaro --her books definitely make me laugh out loud; couldn't read in public without getting a lot of strange looks.  I mean tear-inducing, can't stop laughing kind of laughter.  

For me, "Catch 22"...though it seems people either love or hate this one.

Carl Hiaasen's books are pretty funny. The first one that I read was Stormy Weather, and some parts had me laughing out loud.

The most recent book that made me laugh (OK, cackle like a lunatic (on an airplane, no less)) was Redshirts by John Scalzi. Really cracked me up! Any Star Trek fan will find it hilarious.

Before that, probably Let's Pretend This Never Happened. My husband doesn't think And That's Why You Should Learn to Pick Your Battles is the funniest essay he's ever read, but I sure do.

And of course, if you just want to feel good and laugh while you read, there's always James Herriott.

I'm not one who literally lol's, but The Locklear Letters had me lol'ing on an airplane: http://www.goodreads.com/book/show/375460.The_Locklear_Letters

Sara, John Scalzi's books are a favorite of mine. Androids Dream was pretty lol funny too!