There's sort of an unspoken rule that you shouldn't joke about killing public officials, even if the public official is Nancy Pelosi.

Or, actually, a stagehand wearing a Nancy Pelosi mask, which is technically who Glenn Beck kidded about poisoning last night. Will Beck be sanctioned for crossing that well-established line? Well, in his defense, he is virtually impossible to take seriously even when he's not joking.

After the jump, the video that could get Beck a visit from the FBI.