"Bill grabs his musket and bravely sallies forth to fight the 'War on Christmas,'" O'Donnell mocked. "This is the 'O'Reilly Factor' writers' favorite time of year because they get to recycle a dozen years of 'War on Christmas' scripts."
O'Donnell pointed out what he believes is the absurdity of O'Reilly's "war" by showing a clip from O'Reilly's show of a cartoon that read, "The following Christmas special actually mentions the word Christianity. Viewer discretion is advised."
"Well, I guess that means 'viewer discretion is advised' tomorrow night at 7 p.m. on NBC," O'Donnell responded before cutting to the promo for NBC News' tree-lighting ceremony that is called "Christmas in Rockefeller Center."
The "Last Word" host dug into O'Reilly's show for embarking on the same battle year after year even though O'Donnell says there is really no battle to be fought.
"NBC has been broadcasting the lighting of the Christmas tree as a live special for 16 years, and the Rockefeller Center Christmas tree has been New York City's best known Christmas landmark for 81 years with no help from Bill O'Reilly."
Watch the video for the full clip.