Phrases that tick me off: "opposite sex."

If you have read one or two of my blogs, you know that there are things that happen to piss me off.  Phrases people say, not understanding what they mean, are the biggest things that bother me.  Take for example, "opposite sex."  Now, in theory, there seems to be nothing wrong with this.  The general population has decided that there are 2 sexes: male and female, and because of that, they are different and opposite in all ways, and that is that.

However, I don't agree.  On many levels.  I don't agree that there are 2 sexes.  I don't believe they are completely different, and I don't agree that we should segregate based on sex. 

First things first.  I believe sex is on a spectrum.  I really like spectrums, and I do think there is a lot more grey area in biological sex than meets the mind.  There are individuals that are intersexed, and don't fit into the boxes.  There is research being done that a penis is just an enlarged clitoris.  So wouldn't it make sense that biological sex is on a spectrum?  I understand that there are biological differences.  But even then, testosterone and estrogen levels in individuals vary as well.

I guess my point is that sex is more blurred than it seems to be.  Think about a spectrum: on one end is a someone with only the highest levels of testosterone, and completely "male" in the biological sense.  On the other end is someone with the highest levels of estrogen, and completely "female" biologically.  But then there is everything in between.  So by saying "opposite sex," basically you are saying there are only 2 sexes.  But that isn't correct.

Secondly, the term "opposite sex" implies that there are extreme differences in the sexes, biological or otherwise.  There are board games and tv shows out there that talk about how the male sex is the one that likes the outdoors and cars, while the female sex knows everything about cleaning and cooking.  This again, just perpetuates the stereotypes of masculinity and femininity, and that bothers me.  There is not a difference in males or females; the only difference is what society makes of it.

I would encourage people to stop saying "opposite sex" and start saying "different sex."  That implies more than 2 sexes, and it also implies the fact that it's ok to not fit into the small boxes society forces people into. 

Those are just my thoughts and ramblings.  I am open for a debate.... what do you think?  Do you think there are more than 2 biological sexes?