I know it only as a german expression for something extremely common or regular. Apparently it was a type of machine gun used in WW1 and WW2 that was the default weapon and / or of lower quality.

Man, there is a xkcd for everything …

u and v were so difficult for me to differentiate in handwriting. My handwriting is not that pretty and the difference between a round bottom and a sharp bottom is not that big when stressed in an exam.

Calligraphy. The color of the inks are just mesmerizing. But my normal handwriting is really ugly…