Xbox Easter Egg - Universal Password

I found this egg out on accident,what happend was I brought my xbox to a freinds and while i was helping out his little brother set a ratings lock
for anything above T for Teen.
(blocking out a game i just purchased:Mortal Kombat Armageddon.)
Afeter a week or so trying diffrent combos
i chanced upon the universal password.
This is what you do:Should you forget your password enter X,Y,L trigger, X as a password
and it will bypass the set password so you can change it.

(Try it on a freinds Xbox and change their rating settings to the lowest settings while they are not looking.)