It's the second fine that Johnson has picked up in the 2010 season. After picking up a personal foul penalty for mimicking the gunfire of the minutemen in Gillette Stadium, Johnson was fined $10,000 by the NFL.
In this case, Johnson did not pick up a personal foul for his "Why so serious?" riff on ' and 's self-proclaimed nicknames, Batman and Robin. The lack of a personal foul likely led to the smaller fine amount.
Johnson, according to RotoWorld.com, was set to make $470,000 in base salary this season. His combined total of $15,000 in fines this season, if that salary number is accurate, represents over half of one game check.