Core77

Forgot where you parked? Oh, just use your car remote to help you locate it. Not working? Use your skull! This video shows you how to use the "oral cavity in your skull" to amplify the signal. It sounds a little fishy and the video could've been easily faked, but due to the amount of positive feedback, it seems pretty legit. Check out this comment titled, "Nerds can do it from farther away":

Me and my buddy were skeptical at first, but it really works. We kept on trying it from further distances, only he could honk it 20 yards farther than me because of his retainer.