Well I'm not gay. You are a classic example of a cultural gender assignment dudePlease Register or Log in to view the hidden image!
Interestingly, my mom was also gender neutral as a kid, in that she liked all sorts of toys not just the gender appropriate ones. Seems there are too many exceptions for it to be a rule or a norm. My girl friends that I had as a kid liked things like building blocks and other such boyish toys. Kids seem to like their gender stereotypes a lot more than they did when I was a little one, which makes me suspect it's 99% social and 1% biological.