Porno Karaoke!

You can thank Germany for this new twist on an old theme.

Film producers Satt und Durstig organized a premiere in Berlin last month after a successful test run in the northern city of Hamburg and the trend has already spawned imitators in other major cities.

The event follows the rules of traditional karaoke but instead of standing in for Whitney Houston or Frank Sinatra, contestants belt out the parts of adult movie stars.