What Video Caused Joe Scarborough to Break Down Laughing and Declare Mitt Romney a 'Horrible Politician'?

Joe Scarborough during a Wednesday broadcast of MSNBC’s "Morning Joe," broke into a fit of embarrassed laughter after co-host Mika Brzezinski introduced a clip of Republican presidential candidate Mitt Romney leading what looks like a rather unsuccessful "Romney-Ryan" chant at a campaign stop in Ohio:

"Oh, sweet Jesus," said Scarborough as he buried his face in his hands.

"What’s wrong with those people?" asked co-host Brzezinski.

And while MSNBC contributer Ed Rendell looked on with amusement, Scarborough, a frequent critic of Romney, took the opportunity to once again declare the GOP presidential hopeful a "horrible politician" and "one of the worst."

Final Thought: We thought we'd point out real quick that Brzezinski didn't think former Gov. Jennifer Granholm's Democratic National Convention speech was in any way embarrassing or unbecoming:

But Romney leading a supposedly halfhearted chant? God, he’s just the worst.

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(H/T: HuffPo). This story has been updated.