Is it more socially acceptable to make a sexist joke than it is to object to one?

Another day, another sexist joke on Facebook.

I've developed a habit of saying something when I see sexist, racist, homophobic or similar statements made by my friends.

It's an annoying habit, I'm sure, but no more annoying than the habit of posting crap that makes sweeping, prejudice statements about an entire group of people.

So I post a comment, pointing out the flaws in the joke's attempt at logic.

The response is so predictable, it's almost heartbreaking.

First, "don't take it so personally", "sorry if I offended" or similar. They're just having a laugh, you see. I need to realize it's funny.

In this example, I'm not supposed to take a statement that attacks all women personally. The male who posted the joke expects me to respond in a way that he considers "normal": amusement while not personally identifying with the people being attacked in the joke.

As the people being attacked in the joke are all women, this means he expects me to not identify as female. I must equip male eyes when I view this joke. That, to this man, is normal and good.