Halo 2 Easter Egg - Humourous Windows Error in Game

On the multiplayer map 'Zanzibar' go to where there is an electromagnet-like spinning thing inside the area with the gate, not the huge big spinning fan thing, but the smaller one where there is an openable gate. (At the beginning, one player will be spawned facing a large fan looking object, if you continue straight ahead past this fan, and then go into the building ahead, you will be in the area I am referring to.) On the second storey of this building is a mezzanine type level, where the switch to open the gate below can be loocated. On the blue screen next to the switch, after opening the gate is a humourous Windows type error messgage;

" WAG
A total FU exception has occurred at your location. All system functionality will be terminated.

*Press any key to power cycle the system. If system does not restart, scream at top of lungs and pound on keypad.

*If you need to talk to a programmer, press any other key.
Press any key to continue_ "