The former secretary of state was giving a speech at the Institute of Scrap Recycling Industries at the Mandalay Bay Convention Center when an unidentified woman threw a shoe on stage.
Clinton managed to duck the projectile and quipped, "My goodness, I didn’t know that solid waste management was so controversial."
"Good thing she didn't play softball like I did," Clinton added, prompting cheers from the audience.
“Is that a bat?” Clinton continued, when the woman followed up with a bunch of papers.
A conference rep told the Sun that the woman was not part of the event. She was escorted away by police.
In a similar incident in 2008, an Iraqi journalist threw two shoes at former President George W. Bush during a press conference in Baghdad.
[Las Vegas Review Journal, Las Vegas Sun]