Paddington - I think I might be like you. If the pics saying we're having a boy, it may take me a while to accept that reality. It's not that I particulalrly want a girl, it's just that I've never been able to imagine having a boy. It took me a while, but I finally decided it was because I was always trying to picture raising my child(ren) alone, and how would I know what to do with a boy? Even after marrying DH, that particular block hasn't completely dissolved. I try to remind myself that it's extremely unlikely that I'll ever be a single mom, but since that was my experience, it's all I can reference. Odd, no?
Luckily, DH isn't offended, he just laughs it off and tries to be reassuring. I have to say, if we are gifted with a boy, DH is so in charge of explaining stand-up peeing.