Change 1 letter in a film title...

[doodlejump1980]

... to turn it into a naughty title. I’ll go first...

Lawrence of a Labia

Transpotting

Schindler's Lust.

(Sorry.)

Having Private Ryan

Splosh

Foofloose

The Cocky Horror Show
Dead Minger
Lust in Translation

Dead Man Wanking

The Lion Kink
The Jungle Bonk
The Da Vinci Chode

The Ick Storm

All That Jizz

Hard gays night

Jailhouse cock
Cock around the clock
King dong

Some Like It Hit
Crave
Craveheart The Shiting

Lovely Boner

Robocup
Moby Duck
What’s eating Gilbert grope?
Edward Scissor Wands

Strictly Ballromp

Raging Bum

The Gropes of Wrath thanks @PaddingtonMare

Bone with the Wind

Prefect Storm

Chitty Chitty Gang Bang

Children of the Porn

Transfarmers

Lust in Rio
Lust in Space
Lust Tango in Paris

(Now I've found a theme I'm on a roll!)

Great thread, OP. Although nothing beats Cunt for Red October, which was about the second post in.

Forrest Hump (A tale about a serial shagger or a man with terrible mood swings)
Backgraft (the true story of a woman's painful journey through multiple surgeries)