Plus, What's with the cup at all? He couldn't wait until he was inside to ask for another coffee?
Nothing spells, "No Class" like "Barack Obama".
Protocol would require the C in C actually stand at attention and give the Salute of Respect due the uniform. A walking salute is an insult.
His middle finger is a misuse of standard behavior by an officer, and disrespect for those who serve our country.
A groundhog would be a better President. (sarc)
Why assume it was coffee...maybe his ‘coffee cup’ is how he smuggles drugs into the WH.