HOME • EN (English) • Videos • LeBron James and Cavs mannequin challenge with first lady Michelle Obama! 11/Nov/16 11:54 LeBron James and Cavs mannequin challenge with first lady Michelle Obama! 11 Nov 2016 11 Nov 2016 2016-11-11T11:54:19+00:00. Aris Barkas - 11 Nov 2016 Eurohoops.net Aris Barkas The Cleveland Cavaliers visited the White House today and did the Mannequin Challenge with First Lady Michelle Obama Tags Lebron NBA