A hand or finger tendon that gives a player the quickness and flexibility to master video games, especially games that require great dexterity and precise button pressing sequences.
The act of blowing on something that ain't working, presumably to remove dust, in the hope that you will try again and it will work.
Origin: Nintendo cartridges were notoriously sensitive to dust.
Slacker1: Man, this tape wont go in the VCR!
Slacker2: Bro, give it the ol' Nintendo Blow.