no one on this site will tell u

I don't know either. but i would like to do it right now! xD.
i need to rank up!

well is anybody hosting one i have me and 2 other people and i want to really bad

if someone could that would be awesome cause i want to right now as well = )

you guys obviously don't look around much because there are manys tuts for this

Forums/file=viewtopic/t=15625/pos...art=0.html

hosting it right now ty messege me idooki3 zz for inv

As nex1 said go on the link, but if ur still too lazy (how could you be that lazy?) here are the instructions

Posted: 2009-12-17, 20:24:01 Post subject: mw2 double xp glitch!!

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Double XP In Private Match Glitch (TuT)
1. Person 1 create a game lobby.
2. Person 2 join the game lobby.
3. Person 1 click on find game then click on Third Person Team Tactical.
4. Person 1 and 2 wait until you are at the screen looking for more members.
4. Person 1 back out to the game lobby.
5. Person 2 follow them back to the game lobby.
6. Person 1 click on private match.
7. Person 1 switch the gametype to Search and Destroy.
8. Person 1 switch the map to Rust.
9. Person 1 start the private match.
10. Person 1 go to your friend's list or recent player's and join someone's game by clicking "Join Session in Progress."
11. The host will "migrate" to Person 2.
12. Person 2 click "Start" and click on "End Game."
13. Person 2 invite Person 1 back to the game.
14. Person 1/2 invite players to the game to boost with.
15. Person 2 (Now the host of the lobby) click on "Callsign and Killstreaks" and then click on "Clan Tag."
16. Person 2 switch your clan tag to something new and the game lobby screen will change.
17. Person 2 click on "Find Match" and scroll down to "3rd Person Cage Match" but do not click on it. Instead, hover over it for one to two seconds and then hit "B" on your controller to go back to the game lobby screen.
18. The game will now start to countdown, you might not be able to see it, but it will be apparent by the "ticking" noise in the background.
19. Person 2 go to your friend's list or recent player's and join someone's game by clicking "Join Session in Progress."
20. The host will now migrate again to a random person in the game.
21. Invite Person 2 back to the game.
22. Arm the bomb with about 10 seconds left to maximize the time per round, and disarm it with about 10 seconds left.
23. Once the next round begins, all points gained will be doubled (including xp gained from Riot Boosting).
24. Once the game ends, not an individual round, but the whole entire game, you must repeat all of the steps as it will not work the next game you play. Once you get memorize the steps, it only takes 2-3 minutes to perform all the needs tasks.

Not my guide credit goes too Message
TTG_ROB_x