[Easy]
There was a sex scene here. It's gone now. ^^
Hints :
1/ A woman and a man without faces ;
2/ The man's standing on the right side ;
3/ If you really can't see anything, here are the steps to the final result (from right to left) : http://www.hostingpics.net/viewer.php?id=533136recherchespicross.png :)