A phrase meaning Yes or a response in a positive term. The "G" is added to the beginning to make the response of Yeah more "G'd" up. Because now a days all of society would love to make there life's more "G'd" and why not use it when replying with Yes or Yeah?
Boss: "Frank.....I was a little curious on whether or not you got your report done, the question I'm getting at is...have you?"
Frank: "G-Yeah!"
Frank: "G-Yeah!"
by J-Money $ December 03, 2005