The billboard features two NBA Championship rings, side by side, and the words "You're Welcome, Lebron. Love, Miami."
It's a Miami Heat fan's way of sending a message to the former Heat star and current member of the Cleveland Cavaliers organization, in Lebron James' own hometown of Akron, Ohio.
Tweets of the billboard went viral yesterday and Cavaliers fans are not happy.
There are reports that Miami radio host and sports writer Dan LeBatard purchased the billboard as a way to say to fans of the Cavs that James should be thanking the Heat for the two rings he now has, since he never got one the first time around in Cleveland.
There is speculation that Miami and Cleveland will play each other next season.