Im not sure if it is R2+L2 or R1+L1. anyway Double or triple press the 4 buttons at the same time. You will get " Just ask me Nicely" Achievement after you done that ! Hope this help !
for ps3 press R2 and L2 rapidly at main menu for xbox 360 LT and RT rapidly
press L2 AND R2 CONTINUESLY
press the trigger buttons repeatedly
In the menu where you are in the chair look down and press L2 and R2 rapidly until you get up.
Simultaneously press R2 and L2 on the menu.
press L2 and R2 rapidly
press all the bottons
you rapidly press l2 nd r2
you press r1 r2 at diffrent times then get out of the chair and go to the computer and press on it.
in xbox:you press the rt and lt button in ps3:you press the r2 and l2 button wii:shake both controlers
Press both trigger buttons a few times.
The zoom feature is a feature from the mod optifine, the zoom occurs when you press left ctrl.