Sometimes your life explodes like a grenade, all violent and dramatic and loud. Other times, like now, it kind of explodes more like a ballpoint pen.
You don't even notice it's happened, at first. You feel your finger slip but you think it's just the oil on your skin. Then you notice a tiny smudge of blue. And quickly, to your horror, you realize that half your hand is covered in the stuff, and it's gonna take ages to get it off.
Of course, it happens right at the critical part of the lecture, right after the prof says something like "Write this down and go home and memorize it, because you will need to understand this from here on in, and it's complicated".
And I just know, I'll deal with my right hand and then find ink on my elbow. I'll think I'm done, but there's some on my chin.
It's tiring. But you've got to get the stuff off.