Yesterday morning, I bought a black ball-point pen and used it to write lecture notes.
Half way through the lecture, it stopped working, and no matter how hard I scribbled would not resume its function.
Today, wishing to do work and in absence of any other writing implements, I returned to the pen. After a brief scribble, it seemed to work.
After a short time, however, the ink began to turn blue, before running out completely after a day of use.
This is by far the worst pen I have ever owned. I am going to leave it in the toilet.