A law professor posted a picture of the pens her pupils were using to cheat, calling the practise a form of art.

A photo by Yolanda de Lucchi shows a dozen or more BIC ballpoint pens that were engraved with notes. Lucchi, a professor at the University of Malaga in Spain, disclosed that she had taken the pens from a student roughly two years prior and had recently discovered them when cleaning her office.

Have you ever cheated in an exam?