Sexy and I Know it is the third single off their second album, Sorry For Party Rocking.

The song became the group's second number one hit on the Billboard Hot 100 in the U.S., making them the first duo to have two successive number-one singles since OutKast's "Hey Ya!" and "The Way You Move."

Below is a lyric svideo, but if you CLICK HERE to see the original music video, you must be 18+. The song has also been parodies by Comedian Eric Schwartz (Smooth-E.)