#7 Blowing Cartridges
As every one who grew up during the Super NES era “knows,” you have to blow on your video game cartridge to get it to work, if it’s ever wonky. The truth of the matter is that blowing on the cartridge can damage it—it even says so in the user manuals. It’s unknown who came up with it or why people thought it’d be a good idea to blow on the cartridge to ‘clean off the dust’.