What is the song from the Alvin & Chipmunks movie that Alvin puts on while Dave & Claire are eating dinner?

Sounds like something by Barry White & Donna Summers, but I don't know for sure. Its definitely NOT Leon Haywood "I Wanna Do Something Freaky To You" although that IS the first line of the song. The rest is VERY hard to hear, but you do hear "Slip, Slide On Down" before Dave turns it off. What is this song, because I love this type of music.