Me too. I have a twin sister, I am a boy and it never ceases to amaze me how many people ask me when I tell them I have a twin sister they ask are you identical.
I've always wondered if "identical twins" were mirror images of each other. One right handed, one left. Internal organ arrangement (heart, digestive tract, &c.) can also be right or left handed, with the heart being left of the chest center-line being most common. Or do twins have the identical "handedness"?
I've seen pictures of twins married to twins with the ladies waving to the camera in which they used opposite hands and that always caused me to wonder.
Regards,
GtG