http://www.facebook.com/recover.php/
there put the slave's email and fill the captcha then it will ask you to enter a new email where you put your email ( not the one used on an existing account but a new one )

- it will then ask you the security question ( if you know it very well then just put it and the account is hacked )
but if you do not know the answer just keep entering random words until the limit is exceeded

- Once the limit is exceeded it will ask you to choose three trusted friends
there you put the three accounts you made and added your slave

- It will then send all three accounts the security code
and you go login all three and get the security code and just put it

- Hacked , enjoy now
change the security question and he can't recover the account unless he uses the same thing we did ;)