6. Corpse Bride
Plot: When a shy groom practices his wedding vows in the inadvertent presence of a deceased young woman, she rises from the grave assuming he has married her.
Porno Plot: This one's a little sick, but there are some sick people out there. Not that the porno version would be about necrophilia (just puked in my mouth a bit). It would rather be about a man that loses his bride and begins indulging in his new found freedom except his "corpse bride" comes back to haunt him and his lucky ladies. Again, that could probably be the plot to a real movie... still, if your mind is really in the gutter then it should only take a little bit of labor until you make the connection from kids title to porno title on this one.