First of all, I'm a woman.The point of your post is moronic. The fact that government bans child pornography -- which involves the literal rape of a child -- is not even remotely the same thing as banning a stupid and tasteless attempt at humor. One involves a person being bodily penetrated or exposed for the sexual gratification of others. The other is a stupid joke that we can all just shrug off as stupid.
You need to look in the mirror, guy.
Second of all, I took that list of exceptions straight from a Congressional Research Service report written by a legistlative attorney,so you getting your knickers in a twist over the mere mention of it is that much more fascinating.
Third of all, you're still conveniently ignoring the other examples still as you continue to clutch pearls and ignore the overwhelming point: there are already exceptions to free speech in the United States. If you're not going to engage in good faith, don't waste my fucking time.