I've been reading H.L. Mencken's "In Defense Of Women" recently. I would highly recommend picking it up
http://www.gutenberg.org/ebooks/1270
First of all, if you read any Mencken your brain is going to be stretched out big time. Partially because it's way before our time, but mostly because of the language. I have to look up at least one word he's using on nearly every other page. But he can also be bloody hilarious and scathing. Carlin, Hicks, Hitchens etc. they are all good in that regard, but nobody writes a sick burn like Mencken.