James Ian Longworth was stumbling after 10 schooners of beer when he made the decision to clench his fist and throw a life-changing blow.
Now he will spend a minimum of three years in jail for punching Sydney bouncer Fady Taiba, leaving him in a coma for 19 days and with lifelong injuries.
Longworth, 35, was sentenced in the NSW District Court to a maximum of four years and 10 months imprisonment on Thursday.