Metropol

Billie Piper - Something Deep Inside in my Pants
Joss Stone - Don't Cha Wanna Ride in my Pants
Blue - All Rise in my Pants
Green Day - Time of your Life in my Pants

A few (dozen) more:

Alphaville - Forever Young in my pants
Nirvana - Smells Like Teen Spirit in my pants
Ronan Keating - Nothing at All in my pants
Manics - If You Tolerate This Then Your Children Will Be Next in my pants
Aussie Crawl - Oh No Not You Again in my pants
Backstreet Boys - Incomplete in my pants
Daniel Bedingfield - If You're Not The One in my pants
David Gray - Sail Away in my pants
Del Amitri - Nothing Ever Happens in my pants
Divinyls - I Touch Myself in my pants
Five - Got The Feeling in my pants
Happy Mondays - Kinky Afro in my pants
Housemartins - Happy Hour in my pants
Blondie - The Tide is High in my pants
Nik Kershaw - The Riddle in my pants
Pink Floyd - Comfortably Numb in my pants
Special D - Come with Me in my pants
Celine Dion - My Heart Will Go On in my pants
Urban Cookie Collective - Spend The Day in my pants
Kim Wilde - You Came in my pants

The Sugababes - Push the Button in my Pants
KT Tunstall - Suddenly I See in my Pants
Basement Jaxx - Do Your Thing in my Pants
Embrace - Gravity in my Pants
James Blunt - You're Beautiful in my Pants
Sean Paul - We Be Burning in my Pants
Daniel Powter - Bad Day in my Pants

Urban Cookie Collective - Key to the secret in my pants
Kylie Minogue - Spinning around in my pants
Kylie Minogue - On a night like this in my pants
Sugar Ray - Every morning in my pants
Caesar's Palace - Jerk it out in my pants
Basement Jaxx - Red alert in my pants
Ce Ce Peniston - Finally in my pants
Rod Stewart - It takes two in my pants
Minnie Riperton - Lovin' you in my pants

Shiny happy people in my pants
Pet Shop Boys - Love comes quickly in my pants
Van Morrison - Have I told you lately that I love you in my pants
Anastasia - Freak of Nature in my pants
Queen - Fat bottomed girls in my pants.
Amerie - Just one thing in my pants
REM - Everybody hurts in my pants
Damien Rice - Volcano in my pants
James Blunt - 3 wisemen in my pants
Black eyed peas. - Where is the love in my pants
Marvin Gaye - Whats going on in m pants
U2 - Desrire in my pants
Tears for fears - Shout in my pants
Black eyed peas. - Lets get this started in my pants
Smiths - Hand in glove in my panys
Nena - 99 red balloons in my pants
Coldplay - Trouble in my pants
Coldplay - Warning sign in my pants
Keane - Somewhere only we know in my pants

Scissor Sisters - Filthy and gorgeous in my pants
Buddy Holly - Peggy Sue in my pants
Backstreet Boys - Larger than life in my pants
Eiffel 65 - I'm blue in my pants
Oasis - Don't Look Back in Anger in my pants
Toraigh - Cobbler's Daughter in my pants
Chicago - All That Jazz in my pants

Not sure if any of these have been mentioned but here goes:

Queen : It's a kind of magic in my pants
U2: I still haven't found what I'm looking for in my pants
Inner City - Good life in my pants
Inner City - Big fun in my pants
Boston - Don't look back in my pants
Bryan Adams - Run to you in my pants
Michael Jackson - Wanna be starin' somethin' in my pants
Tina Turner - Be tender with me baby in my pants
The Eagles - James Dean in my pants
David Bowie - Little wonder in my pants

I wasn't thinking of any song titles, just Mr Antz' user name...................

Nick Harvey wrote:I wasn't thinking of any song titles, just Mr Antz' user name...................

Indeed, never thought of that one. But worryingly, it's so literal.

Bjork: Enjoy in my pants
Toy dolls: Nelly the elephant (is) in my pants

Keane: Everybody's Changing in my pants
2 Unlimited - No Limit in my pants
Ace Of Base - All That She Wants in my pants
Freak Power - Turn On, Tune In and Cop Out in my pants
Frankie Goes To Hollywood - Relax in my pants
Scatman John - Scatman in my pants
Queen - I Want To Break Free in my pants
Various - Love Can Build A Bridge in my pants
Eminem - The Real Slim Shady (is) in my pants
Culture Club - (there's a) Karma Chameleon in my pants
Mr Blobby - Mr Blobby in my pants

Aswad - Don't Turn Around in my pants
Meatloaf - (there's a) Bat Out Of Hell in my pants
Meatloaf - Anything For Love But I Won't Do That in my pants