If you are one of those people who think that we never really grow up, nor that we should, then you are definitely going to appreciate the video below. The clip will teach you how to properly do a trick that you’ve probably wanted to know how to do since you were just a little kid. We’re talking about how to whistle with your fingers. We’ve all tried to do, but failed every time. To make sure you won’t embarrass yourself in front of your friends while showing this trick anymore, watch the video below. You’ll be a whistling master in no time.