The Dark Asshole (The Dark Knight)
Star Wars Episode V: The Asshole Strikes Back
Star Wars Episode IV: A New Asshole
Asshole of God (City of God)
The Silence of the Asshole
Maybe add a new plot line too.
Honey I shrunk the asshole.
Rick Moranis tries to keep his marriage fresh by shrinking his asshole further to enhance the experience from the strap on his wife fucked him with.