President Joe Biden was subjected to a right-wing anti-Biden slur during a Christmas Eve call with NORAD's Santa tracker.Biden and the first lady were speaking with families around the country who had called into the North American Aerospace Defense Command to receive an update on Santa's location when one parent ended the conversation by saying: "Let’s go Brandon/The president did not appear to recognize that the phrase is used by the right wing as a euphemism for "f--- Joe Biden," and responded: "Let’s go Brandon, I agree."