Ok...here are my suggestions..
Never Say Member Again
Live and Let Shag
Before Love, Come Honor (not a parody title, but defintely in the Austin Powers spirt...double entendre, don't you know.)
Boobraker
Austinpussy ( would be a bit too easy since they used it for the "fake" movie in the 3rd one)
Thunderballs
The man with the Open Fly
Liscense to Shag
[deleted]
They have to go with "For Your Thighs Only"!
When you play the game of monopoly, you win or you go bankrupt. There is no middle ground.
Dr. Yeah Baby!
You Rush Her With Love
(Goldmember)
Thunderballs
You Only Shag Twice
In Her Majesty's Secret Grooves
Shagging is Forever
Live and Let's Shag (someone else's)
(International Man of Mystery)
(The Spy Who Shagged Me)
Ballbraker
For Your Thighs Only (rumoured fourth title)
(Austinpussy)
A Shag to a Kill
The Groovy Daylights
Licence to Shag (someone else's)
Goldenrod (someone else's)
Tomorrow Never Comes
The Shag is not Enough
Shag Another Day
Shag Royale
Shag of Solace
Rodfall
SPECTRE: Special Executive of Coming, Thrusting, Rogering and Exhaling
www.bondandbeyond.forummotion.com
The Invisible Man
Because AP 4 is never ever going to happen.
Austin Powers 4: The World Said "No!" But We Made It Anyway
The first transport is away... hey!