Classrooms, lecture halls and offices will never be the same again.

If you, like us, spent half the time flicking around elastic bands with the fear that they were going to come back and hit you just as much as anyone else, then this foolproof technique will come as a welcome relief.

Grant Thompson's Rubber Band Hand Gun not only teaches you how to not hit yourself but also shows you how to turn your hand into a semi-automatic weapon. Which may or may not come in handy (you never know).

Via YouTube