Do it in the butt

The story:

I was at a New Year's Eve party with a very good and ambitious
band, which decided to play this song. My party companions and I
weren't familiar with the song or band and, while dancing, couldn't
stop giggling at the concept of a mainstream pop song with a
refrain of "do it in the butt."

So I actually went home and Googled it, which led me to the real
song. My Google search history is now tainted, but we all got a
good laugh out of it.