You can't go on social media without hearing about #alternativefacts." Where does the hashtag come from? Well, according to President Donald Trump senior adviser Kellyanne Conway, White House press secretary Sean Spicer's false claims about the size of the crowd at Friday's inauguration were "alternative facts."

She used the phrase in an interview on NBC's 'Meet the Press.' Host Chuck Todd asked Conway about why the White House on Saturday had sent Spicer to brief the press using false figures about the crowd at the inauguration.