George Carlin said it best

I thought he was pretty funny and my uncle really, really thought so. We sat up and watched Carlin's comedy specials a number of times and he put him right up there with Richard Pryor when it came to making people confront uncomfortable issues through laughter. He hit the nail on the head often with his commentary on race and class and gender and I could point you toward one of his more politically or socially enlightening routines but I think I'll share a funny dose of the real George Carlin at his most lewd and crude because that's a badge he wore with pride. Listener discretion advised - here's a quote from a bit titled "Feminist Blowjob" followed by the extended audio on YouTube:

I do not understand why prostitution is illegal. Why should prostitution be illegal? Selling is legal. F---ing is legal. Why isn't selling f---ing legal? Y'know, why should it be illegal to sell something that's perfectly legal to give away? I can't follow the logic on that at all. Of all the things you can do to a person, giving them an orgasm is hardly the worst thing in the world. In the army they give you a medal for spraying napalm on people. Civilian life you go to jail for giving someone an orgasm. Maybe I'm no supposed to understand it.