This thread amazes me. Everytime is sort of gets back on the topic at hand, it is promptly derailed. No, not just derailed but blown to bits.
Sex changes*...
*
Not that I haven't sort of known someone who had one. He (Ian) taught me some veterinary dermatology in my sophomore year and was married to another veterinarian at the college and they had 2 kids. When I graduated, 'he' was now Jan and I think in the final stages of the whole deal. Needless to say his wife stopped working there and moved back to Scotland with their kids.