LeBron James was fined by the NBA last week for making an obscene gesture and warned for using profane language. If his postgame interview on Sunday was any indication, James is taking that warning seriously.

LeBron scored 33 points in the Los Angeles Lakers’ 110-106 win over the Detroit Pistons. He said he was motivated in part by his team’s triple-overtime loss to the Sacramento Kings on Friday night. The way he described his emotions was noteworthy.