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American illusionists and entertainers Penn and Teller received a star on the Hollywood Walk of Fame on April 05, 2013 in Hollywood, California. AFP PHOTO/JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) ( Was7425973 )

American illusionists and entertainers Penn Jillette (L) and Teller speak as they are honored with a star on the Hollywood Walk of Fame on April 05, 2013 in Hollywood, California. AFP PHOTO/JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) ( Was7425949 )

American illusionists and entertainers Penn Jillette (C) and Teller (C, R) are honored with a star on the Hollywood Walk of Fame on April 05, 2013 in Hollywood, California. AFP PHOTO/JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) ( Was7425945 )

American illusionists and entertainers Penn Jillette (L) and Teller (R) pose with magician David Copperfield while being honored with a star on the Hollywood Walk of Fame on April 05, 2013 in Hollywood, California. AFP PHOTO/JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) ( Was7425938 )

American illusionists and entertainers Penn Jillette (L, with his wife and children) and Teller are honored with a star on the Hollywood Walk of Fame on April 05, 2013 in Hollywood, California. AFP PHOTO/JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) ( Was7425943 )

American illusionists and entertainers Penn Jillette (L) and Teller are honored with a star on the Hollywood Walk of Fame on April 05, 2013 in Hollywood, California. AFP PHOTO/JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) ( Was7425930 )

American illusionists and entertainers Penn Jillette (L) and Teller (R) pose with magician David Copperfield while being honored with a star on the Hollywood Walk of Fame on April 05, 2013 in Hollywood, California. AFP PHOTO/JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) ( Was7425933 )

American illusionists and entertainers Penn Jillette (L) and Teller are honored with a star on the Hollywood Walk of Fame on April 05, 2013 in Hollywood, California. AFP PHOTO/JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) ( Was7425942 )

American illusionists and entertainers Penn Jillette (L) and Teller speak as they are honored with a star on the Hollywood Walk of Fame on April 05, 2013 in Hollywood, California. AFP PHOTO/JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) ( Was7425959 )

American illusionists and entertainers Penn Jillette (L) and Teller are honored with a star on the Hollywood Walk of Fame on April 05, 2013 in Hollywood, California. AFP PHOTO/JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) ( Was7425983 )

American illusionists and entertainers Penn Jillette (L) and Teller (R) pose with magician David Copperfield while being honored with a star on the Hollywood Walk of Fame on April 05, 2013 in Hollywood, California. AFP PHOTO/JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images) ( Was7425935 )

LOS ANGELES, CA - AUGUST 19: Magicians Penn Jillette (L) and Teller arrive at the 2006 Creative Arts Awards held at the Shrine Auditorium on August 19, 2006 in Los Angeles, California. (Photo by Frazer Harrison/Getty Images) ( 71670838PS162_2006_Creative )

LAS VEGAS - NOVEMBER 08: Penn Jillette (L) and Teller of the comedy/magic duo Penn & Teller, arrive for the unveiling of music artist Prince's 3121 live entertainment venue at the Rio Hotel & Casino November 8, 2006 in Las Vegas, Nevada. Prince will headline shows at the nightclub on Friday and Saturday nights and will book his own performers on Wednesday nights. He is also a partner in the new 3121 Jazz Cuisine restaurant at the resort. (Photo by Ethan Miller/Getty Images) ( 72435677EM018_Prince_Unveil )

LAS VEGAS - OCTOBER 18: Penn Jillette (L) and Teller of the comedy/magic duo Penn & Teller perform at the Rio Hotel & Casino during a show celebrating five years of performances at the resort October 18, 2007 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images) ( GYI0050857084.jpg )

LAS VEGAS - OCTOBER 18: Penn Jillette (L) and Teller of the comedy/magic duo Penn & Teller pose with an oversized chocolate cake at the Rio Hotel & Casino during a reception celebrating five years of performances at the resort October 18, 2007 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images) ( GYI0050857957.jpg )

LAS VEGAS - OCTOBER 31: Penn Jillette (L) and Teller of the comedy/magic duo Penn & Teller arrive at the gala premiere of "Criss Angel Believe" by Cirque du Soleil at the Luxor Resort & Casino October 31, 2008 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images for Cirque du Soleil) ( 83481539EM090_Gala_Premiere )

LAS VEGAS - MARCH 3: Penn Jillette (L) and Teller of the comedy/magic team Penn & Teller appear in front of a new 28-story tall building wrap of their likeness on the side of the Rio Hotel & Casino to celebrate the duo's 35 years performing together March 3, 2009 in Las Vegas, Nevada. The pair currently headlines a show at the Rio. (Photo by Ethan Miller/Getty Images) ( 56894028 )

LAS VEGAS, NV - MAY 06: Penn Jillette (L) and Teller of the comedy/magic team Penn & Teller arrive at Vegas Uncork'd by Bon Appetit's Grand Tasting event at Caesars Palace May 6, 2011 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images for Caesars Entertainment) ( 64624458 )

LAS VEGAS - MARCH 3: Penn Jillette (L) and Teller of the comedy/magic team Penn & Teller appear in front of a new 28-story tall building wrap of their likeness on the side of the Rio Hotel & Casino to celebrate the duo's 35 years performing together March 3, 2009 in Las Vegas, Nevada. The pair currently headlines a show at the Rio. (Photo by Ethan Miller/Getty Images) ( 56894139 )

LAS VEGAS, NV - JUNE 19: Penn Jillette (L) and Teller of the comedy/magic team Penn & Teller arrive at the 38th Annual Daytime Entertainment Emmy Awards held at the Las Vegas Hilton on June 19, 2011 in Las Vegas, Nevada. (Photo by David Becker/Getty Images) ( 114285570PB084_38th_Annual_ )

Penn and Teller at "The Tonight Show with Jay Leno" at the NBC Studios in Burbank, Ca. Thursday, Sept. 19, 2002. Photo by Kevin Winter/ImageDirect ( id_leno_9_19_20.JPG )

LAS VEGAS, NV - DECEMBER 10: Penn Jillette (L) and Teller of the comedy magic team Penn & Teller arrive at the 2012 American Country Awards at the Mandalay Bay Events Center on December 10, 2012 in Las Vegas, Nevada. (Photo by Frazer Harrison/Getty Images) ( 156759208EM00073_2012_Ameri )

LOS ANGELES - SEPTEMBER 12: Magicians Penn and Teller arrive at the 2004 Primetime Creative Arts Emmy Awards on September 12, 2004 at the Shrine Auditorium, in Los Angeles, California. (Photo by Stephen Shugerman/Getty Images) ( 51277870PB087_creative )

LOS ANGELES, CA - JULY 20: Comedians Penn Jillette (L) and Teller arrive at the Los Angeles premiere of the "The Aristocrats" at The Egyptian Theatre on July 20, 2005 in Hollywood, California. (Photo by Matthew Simmons/Getty Images) ( 53253916MS029_Aristocrats )

Magicians Penn & Teller pose for a portrait, Wednesday, May 20, 2009 in New York. (AP Photo/Charles Sykes) ( Penn & Teller Portrait )

Magicians Penn & Teller pose for a portrait, Wednesday, May 20, 2009 in New York. (AP Photo/Charles Sykes) ( Penn & Teller Portrait )

U.S. illusionists and magicians Penn Jillette, right, and Raymond Teller perform a trick on a member of the public at Westfield Shopping centre in London to promote their 5 night Penn & Teller shows, starting Wednesday, in London, Tuesday, July 13, 2010. (AP Photo/Sang Tan) ( Britain Penn & Teller Show )

U.S. illusionists and magicians Penn Jillette, left, and Raymond Teller talk to each other as they wait for a tv interview before their performance at Westfield Shopping centre in London to promote their 5 night Penn & Teller shows, starting Wednesday, in London, Tuesday, July 13, 2010. (AP Photo/Sang Tan) ( Britain Penn & Teller Show )

** FILE ** Pen Jillette, left, and Teller pose backstage at the 39th annual Academy of Country Music Awards in Las Vegas, in this May 26, 2004 file photo. Penn & Teller will magically appear as hosts of the Creative Arts Emmy Awards, producer Spike Jones Jr. announced Tuesday, Aug. 1, 2006. (AP Photo/Mark J. Terrill, File) ( PEOPLE PENN TELLER )

PENN & TELLER on SHOWTIME. (PRNewsFoto/Showtime) ( 'PENN & TELLER: BULLSHIT!' ON SHOWTIME )