metaquotes | Kayloulee psychoanalyses the Doctor:

I have had an amusing revelation!

The dark side of the Doctor is the bit he doesn't want/like, yeah? The doctor therefore does not want to be a) short b) bald or c) old, which is interesting, especially for this incarnation, considering that he's the youngest AND YET the oldest doctor at the same time. His 'dark side' is also judgemental about his fashion sense. Oh Doctor. Your insecurity about bowties is really quite endearing, if a little creepy coming from the anthropomorphic personification of your manpain.

Mostly I'm amused that he doesn't want to be short and balding.

Context looks good in bowties