The Romney campaign is calling Joe Biden’s comment about the middle class being “buried for the past four years” a gaffe, and it does fit the criteria of “accidental-honesty.” There’s no doubt the middle class has been hit hard under the current administration, which is why the Obama campaign is having such a difficult time cleaning up after Biden’s comment. They can’t claim Biden is wrong (or they’ll seem out of touch), but they obviously can’t acknowledge he’s right.