Over the course of the Democratic primary season, MSNBC has on a number of occasions drawn the ire of Sen. Hillary Clinton. A new gaffe that occured during today’s around-the-clock political coverage is sure to ignite new flames.

Host Norah O’Donnell turned the audience’s attention to Clinton’s repeated calls for a 22nd debate with Sen. Barack Obama. She then showed a video clip in which Clinton said: “We could even do it on the back of a flatbed truck, doesn’t even have to be in some fancy studio somewhere.”

In the transition between the clip and the commentary, an unknown culprit uttered the word “skanky.” Oh no he/she didn’t! We give you Skanky-gate. See the video after the jump.

Update: The Politico’s Michael Calderone offers an explanation for Skanky-gate. First he confirms that guest commentator A.B. Stoddard of “The Hill” was the person who said “skanky.” When reached by phone, Stoddard gave Calderone her alibi:

Stoddard, reached by phone after this item initially ran, said that in no way did she use the word “skanky” to refer to Clinton–even though it directly follows the clip.

According to Stoddard, MSNBC had a clip in the monitor relating to the Vanity Fair photo scandal, where a risque shot of Miley Cyrus (aka Hannah Montana) is running in the magazine’s latest issue. Cyrus has said that the photos weren’t meant in a “skanky” way, and the word appeared on the screen.

“Skanky is not in my vocabularly,” Stoddard told me.

Nevertheless, Stoddard began laughing as O’Donnell played the Clinton clip, and tried to let the anchor know the reason why she couldn’t stop. Unfortunately for Stoddard, she uttered the word “skanky” with her mic on, just as the camera cut back.

Stoddard added that there was supposed to be a response from Obama after Clinton’s “flatbed truck” comment.

I don’t entirely buy the explanation Stoddard has given. The word “skanky” was displayed on screen during the coverage of the Miley Cyrus story but only for a matter of 5-6 seconds and a solid few minutes before Stoddard was introduced. There was also a small segment about the tax rebate prior to the clip of Clinton’s debate offer.

That Stoddard thought a video of Obama was to be played when she said “skanky” seems equally suspicious. Regardless, her little mishap was entertaining.