A pianist was hired to play background music for a movie. When it was completed he asked when and where he could see the picture. The producer sheepishly confessed that it was actually a porno film and it was due out in a month.

A month later, the musician went to a porno theater to see it. With his collar up and dark glasses on, he took a seat in the back row next to a couple who also seemed to be in disguise. The movie was even raunchier than he had feared, featuring group sex, S/M and even a dog.

After a while, the embarrassed pianist turned to the couple next to him and said, "I'm only here to listen to the music."

"Yeah?" replied the man. "We're only here to see our dog."