The image of US Vice President Joe Biden shaking hands in the air has gone viral. Biden turned after making his address at North Carolina Agricultural & Technical State University and seemed to shake hands with 'thin air.' He appeared to be disoriented for a time before stepping off the stage. His handshake with no one has sparked outrage on social media. Republican Senator Ted Cruz responded to Biden's video with a wide-eyed emoji. Other social media users questioned his cognitive capacity, while others defended Biden, claiming that his actions were misconstrued. To understand more, watch this video.