Johnny Gomes means in slang: A typical baseball player who, at best, is a liability for his team and then somehow hits the big run to win a playoff series. This happens all too often in baseball. It is quite common in baseball, and often results in the loss of the championship series to the stronger team. Johnny Gomes won’t have to purchase a Boston beer for his entire life. (in Slang Dictionary, added by Remedios Núñez)