11/11/2016 6:02 AM PST BY TMZ STAFF
Despite having a pretty rough week, Michelle Obama found some time to smile and goof around with LeBron and the rest of the Cavs on Thursday … pulling off a Mannequin Challenge at the White House!
The Cavs were at 1600 Penn. to be honored by Obama for winning the NBA championship — and decided to get in on the social media craze while there.
No sign of Barack … guessing he wasn’t in the mood.
