A friend of mine uses liquid ink pens and 0.5mm mechanical pencils, which she keeps clipped to the inside of her binder so as not to misplace them. Another is perpetually searching for pens (mainly Papermate ballpoints) in the depths of her backpack and coming up with a handful of erasers instead.
One young woman I know keeps her pens in a voluminous pencil case, along with a pocket-sized periodic table and a tube of lip balm. Another mysteriously loses her pens, and must resort to borrowing from friends. (Always a frightening prospect for the obsessive pen addict like myself - which pen should I lend out, knowing that I may never see it again?)
One of my professors uses Sharpie Pens, another was seen writing with a Faber Castell Pitt Artist Pen, while yet another uses a fountain pen which he keeps safely in his breast pocket (and unfortunately I only glimpsed him writing with it once, from a distance, so I do not have the slightest idea what kind it was).
My father uses blunt worn down pencil stubs, my grandmother is constantly on the search for the perfect eraser, and my mother keeps complimentary ballpoint pens from every store in town in a cup on her desk, yet also has a fondness for black Zebra Sarasa gel pens (of which she has a not-so-secret stash in the top drawer of the sideboard).
What do the widely varying attitudes of these people to their pens and writing utensils reveal? Do you judge people by the pens they use? What do your pens and pencils reveal about you?