Christmas came late for the Mavericks.

Three days after the jolly fat man delivered goodies, the Chicago Bulls served up the tastiest treat of all — a lay-down performance that the Mavericks gleefully took advantage of Saturday night.

They rolled up a 31-point lead in the third quarter and coasted to the easiest win of the season, a 105-83 blasting of the Bulls at United Center that was a blowout from the early going.

The Bulls were incapable of putting up resistance. Of course, the Mavericks probably had a little something to do with that. With former MVP Derrick Rose out for the season with a knee injury and leading scorer Luol Deng (Achilles) scratched before the game, Chicago was but a shell of the team many thought before the season could hang with Indiana and Miami in the Eastern Conference.

There is no room in the standings for explanations, however. The Bulls weren’t in the mood to compete, and no matter how it happened, the Mavericks desperately needed something like this.

And so, the three-game road trip through the icy Snow belt began with a rousing success.

“We built the lead and we sustained it,” said Monta Ellis, who had 22 points. “They made a run, but we did what we needed to do. The biggest thing is we got to build on this. We can’t be too excited about it.”

Especially given the Bulls’ depleted state and the fact that the Mavericks had a terrific offensive night led by Ellis and Vince Carter, who is beginning to make up for his slow start to the season.