"Sexy and I Know It" is a hit song by American duo LMFAO from their second studio album, Sorry for Party Rocking. It was released as the third single from the album on 16 September 2011. The song was written by Stefan Kendal Gordy, GoonRock, Erin Beck, George M. Robertson and Kenneth Oliver, and it was produced by Party Rock. It went to number one on the BillboardHot 100 on January 7, 2012 and remained there for two weeks. The song became LMFAO's second number one hit on the Billboard Hot 100 in the United States, making them the first duo to have two successive number-one singles since Outkast's "Hey Ya!" and "The Way You Move". The song also reached number one in Australia, Canada and New Zealand, and charted within the top ten in nearly every country in which it charted.
"Sexy And I Know It" debuted at number 76 on the week issue of September 17, 2011 on the US Billboard Hot 100. It later moved to number 50 being the greatest gainer of the week. The song launched into number 25 on the week of October 1, 2011. It jumped into the Top 10 the next week being LMFAO's second Top 10 hit behind Party Rock Anthem. The song peaked at number two on the week of November 19, 2011 being blocked by Rihanna's We Found Love, it stayed at the position for seven consecutive weeks before hitting the top on the week of January 7, 2012. It remained in the Hot 100 for 42 weeks.
Music video
The music video for "Sexy and I Know It" was filmed in Venice, California, and uploaded on LMFAO's YouTube channel on September 16, 2011. It features Redfoo and a group of men including Hok from Quest Crew, The Shuffle Bot, Nathan Pasley and Q dancing around town in speedos in front of women. In several scenes it shows Redfoo lifting weights. Chelsea Korka, Ron Jeremy, Wilmer Valderrama, Alistair Overeem, Victor Kim, Steve Terada, Lola Blanc, Ryan Conferido, Ryan Feng of Quest Crew, Mindy Robinson, Angelo Marconi, Darren Mabee, Darla George, and Simon Rex all have cameos in the video. The music video on YouTube was flagged for sexual content. The final shot of the video pays homage to the final shot of Michael Jackson's Thriller: it shows Shuffle Bot leaving with the girls while it turns its head towards the camera behind it and the image freezes.
In 2012, Glee cast recorded a Spanglish cover of the song. It features Puerto Rican singer Ricky Martin. The song was released as single from Glee cast's fifth complication album, Glee: The Music, The Complete Season Three, in 2012.