By Kate Ward
Updated August 24, 2011 at 01:37 PM EDT

And we thought The Jay Leno Show was the scariest thing to happen to late night. Less than a week after an investigation was launched into a comment from an online jihadist calling for David Letterman’s assassination, an envelope full of a mysterious white powder was sent to The Late Late Show. As host Craig Ferguson wrote on his Twitter Tuesday: “Ack!Someone mailed my show white powder & claimed it was anthrax. I’m not a big fan of that sort of thing.”

Luckily, after authorities were called to the set, it was determined that the substance was harmless — which gave Ferguson full clearance to joke about the scare on his show Tuesday night. The host did indeed touch on the events of the day during his monologue, explaining to audience members why the Late Late Show‘s taping began late: “It started out like any other day. I come into the studio, I have my nap, I fire someone, I then get a massage from the person I fired, I re-hire them. But today … someone sent here an envelope packed with white powder. And I was like, ‘Ooh, I’ll test it for you if you want! I have a special test that I conducted between 1979 and 1992.'”

Ferguson did, however, get serious about the incident, telling the audience, “It’s a very scary situation … My first concern, of course, was for my staff.” Like to add anything, Ferguson? “And by staff, I mean penis.” Click the jump to watch Ferguson discuss the anthrax scare, which, according to the host, contributed to “the most attention the show has gotten since… It’s the most attention the show has gotten.”

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