Although the caller identified Sarkozy's advisor on American relations as Johnny Hallyday, and also named Stef Carse as the Prime Minister of Canada and their "Les Cerveaux de l'info" co-host Richard Z. Sirois as the Premier of Quebec, Palin remained unaware during the six-minute call that it was a prank. They also referred to the Hustler porn film "Who's Nailin' Paylin?" as a documentary about Palin, to which the real Palin replied, "Oh good, thank you." The call to Palin was vetted by her foreign policy aide, Stephen E. Biegun, who took full responsibility for allowing the vice presidential candidate to take the call. According to sources revealed on April 1, 2009, The Masked Avengers tricked the staff of the White House in 2007, while George W. Bush was still president of the United States. Calling from Montreal through Paris, France, to avoid being traced back, The Masked Avengers posed as aides to President Sarkozy, tricking a White House operator into giving a direct phone number to the Situation Room, so they could speak with President Bush. However, the real Sarkozy had already spoken to Bush earlier in the day. The pranksters gave an alibi, saying that he would like to give Bush support, and wanted to talk more about it. After getting through to the Situation Room, they were asked to call back in 15 to 20 minutes—the operator even gave the pranksters the direct phone number. The censored recording of the prank was not made public until April Fool's Day 2009, when CKOI aired the stunt. The delay was due to an agreement with the US government to wait until Bush has left office, due to security concerns.