1. A term used to describe someone who talks like they are very tech savvy but in reality is such a tech retard they have trouble using even the most basic computer functions.
2. Someone who likes to give PC or tech advice when they clearly have no idea what the fuck they are talking about.
Derived from the Keanu Reeves movie Johnny Mnemonic
Johnny Moronic there was gonna download a cracked copy of Photoshop, but instead he wound up installing a tapeworm that ate his harddrive.