"You look Time Lord."

The meaning of "your Doctor" seems to vary depending on who refers to it, actually. Personally, I don't see it at all as being the same as the first Doctor you were exposed to, otherwise I would have said Five. However, I agree that it's the one that forms your idea of who the Doctor is, and for me that only happened when I did research on the Doctors that came before, having just discovered the show and becoming intrigued with its concept, and both Two and Three gave me the general idea of who that chap with the celery was supposed to be like.