Mirrors, Trains, and Vanity

-Yesterday I watched as a school boy on the train borrow his friends pocket mirror to fix and twist his already perfect hair for 20mins.

-Another day on quite a long train journey I watched as a girl, took out her mirror to fix her already perfect hair, after some time fixing, she put the mirror away, only to take it out about 10mins later to fix her hair again. Now her hair hadn't changed in the slightest - we were sitting on a train and there wasn't any strong gusts of wind or the like. The first time she did this I found it quite amusing, but she continued to do this throughout the entire journey, even though her didn't move at all from mirror glance to mirror glance...