It turns out, 'Obama out' was a tribute to who would replace Obama as the next President, Trump.
From the April 30, 2016 correspondents dinner at the White House to the election, November 8, 2016, was a span of 193-days.
This took place on April 30, 2016.
4/30/2016 = 4+30+20+16 = 70 (Donald Trump's age at time of Election / Inauguration)
4/30/2016 = 4+30+(2+0+1+6) = 43 (Obama, 43rd man to be President)
4/30/2016 = 4+3+0+2+0+1+6 = 16
4/30/16 = 4+30+16 = 50 (Donald = 50) (America = 50)
Of course the 'mic drop' was a tribute to the gang both Trump and Obama work for, the Freemasons.
It was also April 30, 2011, where Obama had a field day making jokes about if Trump was the President of the United States.... the birther argument was big that year.
4/30/11 = 4+30+11 = 45 (Trump, is now the 45th President)
At the 2011 White House Correspondents' Dinner, Obama joked what a change to a Trump White House would look like.