National Lampoon's Vacation in the Butt

The Unbearable Lightness of Being in the Butt

Spirited Away in the Butt
The Ghost in the Shell in the Butt
Attack on Titan in the Butt
Vampire Hunter D in the Butt

The Foreigner in the Butt
Rush Hour 2 in the Butt
Rumble in the Bronx in the Butt
Drunken Master in the Butt

Debbie Does Dallas in the butt

Possibly the biggest change in a movie yet.

9 and a Half Weeks in the Butt

A Hard Day's Night in the Butt
Yellow Submarine in the Butt
This Is Spinal Tap in the Butt

Bill & Ted's Excellent Adventure in the Butt

& the sequel...

Bill & Ted's Bogus Journey in the Butt

Weekend at Bernies in the butt
Gremlins in the butt
300 in the butt
About Last Night... in the butt
Alien in the butt
Backdraft in the butt