I heard that to fight the cheese weapon you have to be in Disc 3. Firstys you go into midgar in the wall market slums and enter that little restraunt tentish thing. once in the restraunt you talk to only the first and last customers at the bare.( you no there in a line eating and say munch munch and such.) Once you've done that you can sit at the bar and order Cheese. The waiter'll get it from the cook and serve it to u. Once your done eating the waiter will ask you how it was. YOU MUST SAY (I've eaten better dog food than this.) Then get up and leave. Note: if you've done it right you should here a faint roar as you leave the restraunt. Then make your way out of Midgar and low and behold a text box pops up saying (You have insulted the great and terrible Chease Weapon!) 
Then a screen pops up that lets you heal and switch your charactors, equipment, and your materia if you wish. When you cancel out of the screen you go into that battle seen were the screen swurls to anounce a battle. Finally you get to fight the Cheese Weapon which is insanely hard. However, if you beat him Cloud learns a level 5 limit called "Cutting the Cheese" which makes Omnislash look like a little ant. ALSOOO, you then get the ability to enter the other Slums which are really cool!!!!!!!!!!!!!! 
Then a screen pops up that lets you heal and switch your charactors, equipment, and your materia if you wish. When you cancel out of the screen you go into that battle seen were the screen swurls to anounce a battle. Finally you get to fight the Cheese Weapon which is insanely hard. However, if you beat him Cloud learns a level 5 limit called "Cutting the Cheese" which makes Omnislash look like a little ant. ALSOOO, you then get the ability to enter the other Slums which are really cool!!!!!!!!!!!!!! 
