Unboxing videos are perhaps the biggest waste of YouTube storage to grace the planet: watch a pimple-faced youth take a phone out of a cardboard container and play with some basic functions! Woo. But here's one worth watching.

Put together by the guys at Numberphile, this calculator unboxing does a wonderful job of parodying the glut of videos that exist for smartphones and tablets. Stupid functionality tests! Insightful comments about cardboard boxes! Drop tests! All delivered by Matt Parker in hilarious deadpan style. Enjoy. [YouTube]