A giant douche. One example of douche-like behavior is when he routinely rubs out the "SD" logo the grounds crew puts on the back of the mound at Petco Park. Another example occurred in 2007. Cain first ran his mouth at Scott Hairston after the Padres OF hit a home run and flipped his bat. Later in the same game he waved goodbye to Scott Hairston after striking him out. Douche. He and the Giants lost the game.