Obama Loses Letterman: 'Late Show' Host Mocks President's Red Line Flip Flop

David Letterman may be the most pro-President Barack Obama comedian walking the late night beat, but even the CBS host has to slam a flip-flop when he sees one.

And, in the case of Obama’s new and improved position regarding the red line in Syria, Letterman simply couldn’t stay silent.

Here’s the Late Show host calling Obama to task in a way that feels more like bundled up frustration than an actual joke.

Well now the president is saying he never used the term “red line.” He’s saying that the world used the term “red line.” So, it’s taken him five years, but finally the guy has learned how to bulls–t (bleeped).