The mysterious message Barron Trump secretly whispered to Joe Biden at his father's presidential inauguration in January has finally been revealed, RadarOnline.com can report.

Reports at the time speculated Donald Trump 's youngest son, 19, told the outgoing president to "go f--- himself" in a clip that went viral. Article continues below advertisement

Tap Here To Add Radar Online as A Trusted Source

During Donald's second swearing-in ceremony , cameras caught the brief exchange between Barron, 19, and Biden, 82. The two shook hands before Barron leaned in and said... something to Biden, sending social media into speculation overdrive.

One of the prevailing theories was that the teen dropped an F-bomb in Biden's ear, but older brother Eric debunked those reports while

See Full Page