DALLAS -- Mavericks guard Darrell Armstrong was so happy his

beloved Washington Redskins beat the Dallas Cowboys that he grabbed

a microphone before Sunday night's game against the Minnesota

Timberwolves and hollered, "How 'bout those Redskins!"

It's going to cost him $1,000.

Dallas coach Avery Johnson announced the fine during his

postgame news conference and team owner Mark Cuban later verified

it was legit, much to the chagrin of a disbelieving Armstrong. The

money will all go to charity, with Johnson saying the Cowboys would

decide the recipient.

The Redskins wrapped up a 35-7 victory over the Cowboys shortly

before the Mavericks left the locker room to play the Timberwolves.

As part of the pregame ceremonies, guard Devin Harris wished the

crowd a happy holiday. Then Armstrong, who wasn't scheduled to

speak, asked for the microphone. He added his holiday wishes, then

made his fine-inducing proclamation, a twist on a famous line by

former Cowboys coach Jimmy Johnson.

A mixture of laughter and boos followed, even from German import

Dirk Nowitzki. Cuban laughed, too, and joked with Armstrong about

it when he returned to the bench.