I actually do kind of fit a stereotype, it's just not one that North America recognizes. ^_^
I tend heavily towards feminine things, and my personality is feminine in a lot of regards. But I do have more masculine elements as well.
Femininity-wise? I'm tempted to start quoting Otomen and Kashimashi (which is a sign right there).
I like cute, shiny, fluffy, sparkly things (not necessarily all at once, there's very few of those). Love stories, upbeat songs, flowers... I can also go really emotional at times, especially in romantic matters. I try to look as femininely cute as possible (including incorporating girls' clothes into outfits here and there), and I also use way too many smilies. ^_^
On the other hand, I hang around arcades playing racing and shooter games. I buy and build Gundam models. I'm pretty good at computer programming. I have an interest in cars (though I don't know that much about them at present). I can shove nearly every emotion into the background and run on pure, ruthless logic. And though I don't subscribe to the 'aggression makes a man' idea, if you lay a hand on my girlfriend, I will break it off at the wrist.
Basically I'm a ball of contradictions, if indeed you believe that these two sets of things cannot exist at the same time.
(Lots of people would be surprised how many of these attributes are not actually diametrically opposite each other.)
I find that too many people are willing to define themselves by what they're not. For example, is there very much more to the masculine stereotype than not being effeminate? Any one of the things I mentioned in my 'girl's section' above is enough to get your 'man card' revoked. (Try revoking mine; I never applied for it, ha!) When you define yourself by what you're not, then you give all title to your identity to someone else. They can change who you are, without your input, by changing who they are. Why people do that is what I don't really understand...