...That was the language that Celtics forward Glen Davis used when responding to a fan that heckled him with cries of "fat boy" against the Detroit Pistons on Wednesday night. Television and radio broadcasts picked up "Big Baby's" very adult, explicit and disappointing retort.

Enough is enough with Davis. Doc Rivers is right. It's time for Davis, 24, to grow up. The Celtics were outscored 43-12 in bench points against the Pistons. Davis had 4 points and spent more time focused on the fan than his game.

Davis has had a myriad of issues/incidents in his brief NBA career. He went shirtless during the Celtics's championship parade in 2008. He cried on the bench after being upbraided by Kevin Garnett last season. After he hit his game-winning jumper in Orlando in the '09 playoffs, he got overexcited and accidentally shoved aside a young fan. He broke his thumb on the eve of the season opener in an altercation with a friend.

Now, we have the "Baby Talk" incident. This fan was obviously a moron and he shouldn't have been allowed to berate Davis. But it's time for Davis to start acting like a professional or he won't be one for much longer.