Heads up, Hillary! Hillary Clinton had to act fast when an audience member in Las Vegas hurled a shoe at her while she was speaking before a recycling trade group on Thursday, April 10. The former secretary of state was mid-sentence when the footwear came flying onstage, narrowly missing her head.

"What was that, a bat? Was that a bat?" Clinton, 66, asked after the incident, which occurred at the Mandalay Bay Hotel. "Was that somebody throwing something at me? Was that part of Cirque du Soleil?"

The audience laughed, giving the former First Lady a moment to recover. "My goodness, I didn't know solid waste management was so controversial," she quipped, referring to her speech for the Institute of Scrap Recycling Industries. "Thank goodness she didn't play softball like I did."

Secret service immediately took the woman into custody for questioning. According to CNN, she was not a ticketed guest and had slipped into the event "under the rope at the last second," a spokesman for the host organization said.

Of course, Clinton is not the first politician to be the victim of a shoe-throwing incident. Back in 2008, former President George W. Bush had to duck not one but two shoes thrown at him by an Iraqi journalist.

Watch the video of Hillary Clinton above.