ahem. i have an opinion.

[keryx]

Remember that whole George Bush shoe-throwing incident, and how clever many of us thought that was? [Or maybe that was just me. I certainly thought it was clever. Bush may have disagreed; he appeared a bit thrown by it. "Thrown"? Heh, see what I did there?]

Well, exclaiming "that's a lie!" and then apologizing over that seems about on par. Maybe less interculturally educational and sillier-sounding. Definitely brought the level of discussion and debate down several notches. But still a form of dissent aimed ["Aimed"? I did it again!] directly at the president. Either both are acceptable, or neither is.